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Q 1/326
Score 0
10 parts gold by weight and 14 parts some other element (usually copper)
30
14 carat
50 carat
12 carat
10-carat
Q 2/326
Score 0
50% gold by weight
30
14 carat
10 carat
12 carat
50 carat
326 questions
Q.
10 parts gold by weight and 14 parts some other element (usually copper)
1
30 sec
Q.
50% gold by weight
2
30 sec
Q.
How many naturally occurring elements did God create?
3
30 sec
Q.
the lowest temperature theoretically possible; all molecular motion ceases
4
30 sec
Q.
The value determined by many measurements made by reliable sources; would most likely be a published value. (Also called the theoretical value)
5
30 sec
Q.
how close a measured value is to the TRUE or ACCEPTED value of the quantity being measured
6
30 sec
Q.
the period below lanthanides, very unstable
7
30 sec
Q.
An attraction between molecules of different substances
8
30 sec
Q.
Individuals who mixed lots of stuff together to make new things
9
30 sec
Q.
Group 1, 1 electron in outer level, very reactive, soft, silver, shiny, low density; Lithium, Sodium, Potassium, Rubidium, Cesium, Francium
10
30 sec
Q.
2 valence electrons; group 2
11
30 sec
Q.
a mixture of a metal with at least one other element- strengthens the structure
12
30 sec
Q.
Starch molecules that are smaller and easier to digest.
13
30 sec
Q.
Building blocks of protein
14
30 sec
Q.
A solid made up of particles that are not arranged in a regular pattern
15
30 sec
Q.
A general statement about what happened during the experiment
16
30 sec
Q.
an atom that gains an electron and has a negative charge (usually nonmetals)
17
30 sec
Q.
Chemicals used to prevent reaction of food with oxygen
18
30 sec
Q.
the desire for food.
19
30 sec
Q.
The size of a 2-dimensional surface; l x w
20
30 sec
Q.
static
21
30 sec
Q.
Force exerted by the weight of the air
22
30 sec
Q.
a Greek word meaning "incapable of being cut"
23
30 sec
Q.
The sharing of valence electrons between different atoms to help the atoms get full valence rings with 8 electrons
24
30 sec
Q.
number of protons and neutrons in an atom
25
30 sec
Q.
the number of protons in the nucleus of an atom, it is also the same as the number of electrons in an atom
26
30 sec
Q.
A high energy molecule that can be split apart to release energy for many different processes in living things.
27
30 sec
Q.
When atoms are repelled by each other they want to move _______ from each other
28
30 sec
Q.
Starch formed from long rigid chains of glucose that are bound tightly together.
29
30 sec
Q.
discovered that electrons follow an orbit/shell
30
30 sec
Q.
a simple drawing that shows the numbers and locations of protons, neutrons, and electrons in an atom
31
30 sec
Q.
electrons orbit the nucleus in certain orbits similar to the way planets orbit the sun
32
30 sec
Q.
The temperature at which a liquid changes to a gas
33
30 sec
Q.
If temperature is kept constant, then as pressure increases, volume decreases
34
30 sec
Q.
copper and zinc
35
30 sec
Q.
a mixture of copper and tin
36
30 sec
Q.
built the first spectroscope
37
30 sec
Q.
The ability or tendency to float in water, air or some other fluid
38
30 sec
Q.
Unit for the amount of energy released when nutrients are broken down.
39
30 sec
Q.
an insulated device used to measure the absorption or release of heat in chemical or physical processes
40
30 sec
Q.
A nutrient that supplies energy for your body's functions. Can be simple or complex.
41
30 sec
Q.
Class of energy giving nutrients that include starches, fibers and sugars
42
30 sec
Q.
cast iron, steel, and wrought iron differ only by the amount of this element in them
43
30 sec
Q.
Minerals that contain combinations of Carbon and Oxygen. Used in cement, building stones and fireworks.
44
30 sec
Q.
an atom that loses an electron and has a positive charge (usually metals)
45
30 sec
Q.
c; hundreth; 10^-2
46
30 sec
Q.
device to separate substances by spinning them at high speed
47
30 sec
Q.
discovered the neutron
48
30 sec
Q.
When atoms are attracted to each other or repelled by each other
49
30 sec
Q.
the law that states that for a fixed amount of gas at constant pressure, the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases
50
30 sec
Q.
The force of attraction that holds two atoms together as a result of the rearrangement of electrons between them
51
30 sec
Q.
a change that produces matter with a different composition than the original matter
52
30 sec
Q.
a way to describe a chemical reaction using chemical formulas and other symbols
53
30 sec
Q.
describe how substance will interact with other substances: flammability, radioactivity, sensitivity to light, oxidation, toxicity.
54
30 sec
Q.
the process by which one or more substances change to produce one or more different substances
55
30 sec
Q.
one or two letters that represent an element
56
30 sec
Q.
The study of the properties of matter and how matter reacts with other matter and the environment.
57
30 sec
Q.
A waxy, fatlike substance that is found only in animal products.
58
30 sec
Q.
A technique that is used to separate the components of a mixture based on the tendency of each component to travel or be drawn across the surface of another material.
59
30 sec
Q.
The process of grouping things based on their similarities
60
30 sec
Q.
an attraction between molecules of the same substance
61
30 sec
Q.
A mixture containing small, undissolved particles that do not settle out.
62
30 sec
Q.
contains all 9 of the essential amino acids.
63
30 sec
Q.
starches found in rice, grains, seeds, and nuts.
64
30 sec
Q.
A substance made up of atoms of two or more different elements joined by chemical bonds
65
30 sec
Q.
A _____ element contains at least 2 different elements together
66
30 sec
Q.
A measurement of how much solute exists within a certain volume of solvent
67
30 sec
Q.
The temperature that makes a gas turn into a liquid.
68
30 sec
Q.
To change from a gas to a liquid
69
30 sec
Q.
A material's ability to allow heat or electric charges to flow.
70
30 sec
Q.
Changing only one variable at a time in an experiment.
71
30 sec
Q.
what metal is mixed with gold to give it strength?
72
30 sec
Q.
Deterioration of a material due to interaction with its environment.
73
30 sec
Q.
A bond formed by the sharing of electrons between atoms
74
30 sec
Q.
A solid that is made up of crystals in which particles are arranged in a regular, repeating pattern
75
30 sec
Q.
discovered that atoms of the same element have the same mass
76
30 sec
Q.
discovered nitrogen
77
30 sec
Q.
A technique used to separate a liquid from a solid by gently pouring the liquid from one container to another, leaving the solid in the original container.
78
30 sec
Q.
d; tenth; 10^-1
79
30 sec
Q.
A serious reduction in the body's water content.
80
30 sec
Q.
Mass divided by volume.
81
30 sec
Q.
See image
82
30 sec
Q.
2 forms of Carbon
83
30 sec
Q.
A molecule that consists of two atoms of the same element
84
30 sec
Q.
Movement of molecules from an area of higher concentration to an area of lower concentration.
85
30 sec
Q.
To make a liquid less concentrated
86
30 sec
Q.
A double sugar, consisting of two monosaccharides joined by dehydration synthesis.
87
30 sec
Q.
To replace matter with another kind of matter or to move matter
88
30 sec
Q.
method used to find the volume of irregular shaped objects
89
30 sec
Q.
A process that separates the substances in a solution based on their boiling points
90
30 sec
Q.
Russian chemist responsible for the periodic table
91
30 sec
Q.
A nucleic acid found in the nucleus of all living cells, which carries the organism's hereditary information.
92
30 sec
Q.
A chemical bond formed when atoms share two pairs of electrons
93
30 sec
Q.
The ability of a material to be hammered thin or stretched into wire without breaking
94
30 sec
Q.
The ability of an object to carry electric current
95
30 sec
Q.
a subatomic particle that has a negative charge and is found orbiting the nucleus
96
30 sec
Q.
electrons can be anywhere in the clouds like region around the nucleus.
97
30 sec
Q.
symbol of an element surrounded by the number of dots that equal the number of valence electrons element has
98
30 sec
Q.
the simplest pure substances, and they cannot be broken down into any other substance (the periodic table); the "building blocks of matter"
99
30 sec
Q.
carbon, hydrogen, oxygen
100
30 sec
Q.
An ingredient that brings two normally incompatible materials together and binds them into a uniform and fairly stable blend.
101
30 sec
Q.
See image
102
30 sec
Q.
The capacity to do work
103
30 sec
Q.
A region of an atom in which electrons of the same energy are likely to be found
104
30 sec
Q.
The level where the electron spends its time buzzing around the atom
105
30 sec
Q.
A protein that speeds up chemical reactions in the body
106
30 sec
Q.
Proteins that speed up chemical reactions
107
30 sec
Q.
discovered the dense core of the atom (Gold Foil Experiment)
108
30 sec
Q.
To change from a liquid to a gas
109
30 sec
Q.
the act of conducting a controlled test or investigation to see what happens.
110
30 sec
Q.
Understanding through observation and measurement.
111
30 sec
Q.
A value obtained when performing an experiment; (it's the value YOU obtain or calculate)
112
30 sec
Q.
the lens you look through on a microscope, magnifies the object 10x
113
30 sec
Q.
A nutrient that supplies energy, forms cells, maintains body temperature, and protects nerves.
114
30 sec
Q.
vitamin that is stored in fat.
115
30 sec
Q.
Building Blocks of Lipids
116
30 sec
Q.
Chemical action of yeast on sugars which produces carbon dioxide gas
117
30 sec
Q.
A type of complex carbohydrate that is found in plants and is necessary for the proper functioning of the digestive system.
118
30 sec
Q.
Matter and energy cannot be created or destroyed, they can only change form.
119
30 sec
Q.
Increases the way you perceive the food's flavor without changing the actual flavor of the prepared dish.
120
30 sec
Q.
Federal agency formed in 1913 that approves all foods and drugs for sale in the US.
121
30 sec
Q.
A food calorie is equal to 1,000 metric calories
122
30 sec
Q.
simplest ratio of the ions represented in an ionic compound
123
30 sec
Q.
Separation of many substances in a mixture by heating, using the fact that they have different boiling points.
124
30 sec
Q.
The temperature at which a liquid turns into a solid.
125
30 sec
Q.
When a liquid has turned into a solid
126
30 sec
Q.
coating iron with zinc to keep it from rusting using electricity
127
30 sec
Q.
A form of matter that does not have a definite volume or shape.
128
30 sec
Q.
Matter that does not have a definite shape or volume; has particles that move at high speeds in all directions.
129
30 sec
Q.
results from the force exerted by a gas per unit surface area of an object; due to collisions of gas particles with the object
130
30 sec
Q.
An elastic substance, formed from proteins present in wheat flours, that gives structure and strength to baked goods.
131
30 sec
Q.
Combines with fatty acids to make lipids.
132
30 sec
Q.
the coinage elements
133
30 sec
Q.
a metric system standard of measure for mass
134
30 sec
Q.
Elements in the same vertical column of the periodic table; also called family
135
30 sec
Q.
Alkali metals.
136
30 sec
Q.
Alkaline earth metals
137
30 sec
Q.
A column of elements that have the same number of valence electrons
138
30 sec
Q.
transition metals
139
30 sec
Q.
Highly reactive nonmetals found in family/group 17.
140
30 sec
Q.
most reactive nonmetals; 7 valence electrons; group 17
141
30 sec
Q.
Water that contains minerals that reduce the ability of soap or shampoo to lather.
142
30 sec
Q.
element found on sun before being found on earth
143
30 sec
Q.
discovered hydrogen
144
30 sec
Q.
the solubility of a gas in a liquid is directly related to the pressure of that gas over the liquid.
145
30 sec
Q.
A mixture that is not uniform in composition; components are not evenly distributed throughout the mixture
146
30 sec
Q.
The process of maintaining a steady state inside the body.
147
30 sec
Q.
A mixture in which substances are evenly distributed throughout the mixture
148
30 sec
Q.
The mechanical process that keeps milk from separating. This process breaks up the fat molecules into tiny bundles so they stay suspended in the liquid of the milk instead of floating to the top.
149
30 sec
Q.
first person to separate water into hydrogen and oxygen using electricity
150
30 sec
Q.
the need for food.
151
30 sec
Q.
in Mendeleev's time, atomic wt. was based on this element
152
30 sec
Q.
A proposed, scientifically testable explanation for an observed phenomenon. An educated guess.
153
30 sec
Q.
Liquid solutes and solvents that are not soluble in each other
154
30 sec
Q.
lacking some essential amino acids.
155
30 sec
Q.
A compound that changes color when in contact with an acid or a base
156
30 sec
Q.
not able to dissolve.
157
30 sec
Q.
A charged atom
158
30 sec
Q.
a chemical bond in which a metal atom loses an electron to form a positive cation and a nonmetal atom gains an electron to form a negative anion
159
30 sec
Q.
When an atom becomes an ion it forms bonds with other ions
160
30 sec
Q.
A compound that consists of positive and negative ions
161
30 sec
Q.
metal used by the aztecs that fell from the sky
162
30 sec
Q.
famous scientist born the same year Galileo died (1642)
163
30 sec
Q.
The atoms with a different number of neutrons
164
30 sec
Q.
When atoms are attracted to each other they want to __________.
165
30 sec
Q.
came up with thew modern method for the symbol writing an element
166
30 sec
Q.
discovered carbon dioxide
167
30 sec
Q.
a temperature scale devised so there are no negative temperatures; the lowest temperature is absolute zero
168
30 sec
Q.
k; thousand; 10^3
169
30 sec
Q.
The energy of motion
170
30 sec
Q.
Energy cannot be created or destroyed
171
30 sec
Q.
Matter is neither created nor destroyed
172
30 sec
Q.
Meters (m)
173
30 sec
Q.
a diagram for representing an atom's valence electrons using dots around the element symbol.
174
30 sec
Q.
Scaly deposits formed by precipitation of calcium and magnesium.
175
30 sec
Q.
Fats and oils used for long term energy.
176
30 sec
Q.
A state of matter that has no definite shape but has a definite volume.
177
30 sec
Q.
base standard measure of volume in the SI system
178
30 sec
Q.
Basic unit of volume in the metric system
179
30 sec
Q.
this element generates a lot of electricity for its light weight
180
30 sec
Q.
Large molecules that are formed by joining smaller organic molecules together
181
30 sec
Q.
11/12 silver and1/12 other metal usually copper
182
30 sec
Q.
able to be hammered into thin sheets
183
30 sec
Q.
A measure of the amount of matter in an object
184
30 sec
Q.
The new number of nucleons in an atom
185
30 sec
Q.
Anything that takes up space and has mass
186
30 sec
Q.
The temperature at which a solid becomes a liquid
187
30 sec
Q.
created one of the first periodic tables by using atomic mass
188
30 sec
Q.
The curved upper surface of a liquid column that is concave when the containing walls are wetted by the liquid and convex when not.
189
30 sec
Q.
element used in barometers and some thermometers
190
30 sec
Q.
The chemical process by which the body breaks down food to release energy.
191
30 sec
Q.
shiny, malleable, ductile and good conductors
192
30 sec
Q.
Are element with properties that fall between those of metals and nonmetals
193
30 sec
Q.
shooting stars
194
30 sec
Q.
a basic unit of length in the metric system; length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second
195
30 sec
Q.
system of measurement based on multiples of ten
196
30 sec
Q.
millionth; 10^-6
197
30 sec
Q.
an optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times.
198
30 sec
Q.
m; thousandth; 10^-3
199
30 sec
Q.
A nutrient that occurs naturally in rocks or soil; needed by the body in small amounts.
200
30 sec
Q.
THE MOST COMMON FORM OF SOLID MATERIAL FOUND IN THE EARTH'S CRUST.
201
30 sec
Q.
(chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding)
202
30 sec
Q.
material composed of two or more elements or compounds that are physically mixed together but not chemically combined
203
30 sec
Q.
Used to determine the hardness of a mineral
204
30 sec
Q.
A group of atoms bonded together
205
30 sec
Q.
A molecule that serves as a building block of a polymer.
206
30 sec
Q.
n; billionth; 10^-9
207
30 sec
Q.
element that occurs somewhere on Earth
208
30 sec
Q.
A view of creation that excludes any supernatural being, such as God.
209
30 sec
Q.
The atoms that God made (94)
210
30 sec
Q.
Neutrally charged particles in an atom
211
30 sec
Q.
SI unit for force
212
30 sec
Q.
Elements in group 8A of the periodic table. Have no charge and are gases under normal conditions. (Helium, Neon, Argon, Krypton, Xenon, Radon)
213
30 sec
Q.
brittle , dull, poor conductors of heat and electricity
214
30 sec
Q.
Macromolecules that contain genetic information needed for making proteins
215
30 sec
Q.
Together, protons and neutrons
216
30 sec
Q.
A building block of DNA, consisting of a five-carbon sugar covalently bonded to a nitrogenous base and a phosphate group.
217
30 sec
Q.
The central core of an atom which contains protons and neutrons
218
30 sec
Q.
A substance in foods that the body needs to regulate bodily functions, promote growth, repair body tissues, and obtain energy.
219
30 sec
Q.
Magnifies the specimen
220
30 sec
Q.
An act of noting and recording what you hear, touch, taste, smell and see
221
30 sec
Q.
The chemical rule of thumb that states that atoms of main-group elements tend to combine in a way that each atom has eight electrons in its valence shell.
222
30 sec
Q.
Science that can be observed and reproduced.
223
30 sec
Q.
An area of science that tries to answer questions about the past.
224
30 sec
Q.
A customary unit of weight. 16 ounces equal 1 pound
225
30 sec
Q.
Measuring volume by measuring the water overflows when an object is placed in a completely full container
226
30 sec
Q.
charge of the monatomic ion
227
30 sec
Q.
Compounds formed when oxygen combines with another element (i.e. rust)
228
30 sec
Q.
the element necessary for combustion
229
30 sec
Q.
process that prevents iron from rusting
230
30 sec
Q.
A process of heating food to a temperature that is high enough to kill most harmful bacteria without changing the taste of the food.
231
30 sec
Q.
A calculation comparing a value obtained by you to a scientifically accepted, established value
232
30 sec
Q.
A horizontal row of elements in the periodic table
233
30 sec
Q.
horizontal row in the periodic table
234
30 sec
Q.
repeating chemical and physical properties change in a repeating pattern with the elements' atomic numbers
235
30 sec
Q.
A chart of all chemical elements currently known, organized by their properties.
236
30 sec
Q.
mixture of tin and lead
237
30 sec
Q.
A change from one state (solid or liquid or gas) to another without a change in chemical composition
238
30 sec
Q.
Compounds that contain the element phosphorus and oxygen
239
30 sec
Q.
a change in a substance that does not change its identity
240
30 sec
Q.
A characteristic of a pure substance that can be observed without changing it into another substance
241
30 sec
Q.
The branch of science that studies the nature and properties of matter and energy
242
30 sec
Q.
ions that are made of more than one atom and can be positive or negative
243
30 sec
Q.
A long molecule consisting of many similar or identical monomers linked together.
244
30 sec
Q.
A molecule formed by joining many monosaccharides together.
245
30 sec
Q.
the base English unit for weight
246
30 sec
Q.
A dissolved substance that comes out of a solution due to either a change in temperature or volume
247
30 sec
Q.
Any form of water that falls from clouds and reaches Earth's surface as rain, snow, sleet, or hail.
248
30 sec
Q.
how close a set of measurements are to each other
249
30 sec
Q.
something used or added to foods to keep or slow them from spoiling
250
30 sec
Q.
The elements or compounds produced by a chemical reaction.
251
30 sec
Q.
Characteristics of matter that helps identify or classify matter
252
30 sec
Q.
The physical properties of metals include luster, malleability, ductility, and conductivity
253
30 sec
Q.
Nutrients the body uses to build and maintain its cells and tissues
254
30 sec
Q.
a subatomic particle that has a positive charge and that is found in the nucleus of an atom
255
30 sec
Q.
The positively charged particles in an atom
256
30 sec
Q.
a substance made of only one kind of matter and having definite properties.
an observation made using your five senses. It also uses NO numbers.
259
30 sec
Q.
measurements which involve determining a numerical value
260
30 sec
Q.
number and scale; ex. 32 meters
261
30 sec
Q.
elements that give off particles
262
30 sec
Q.
A starting material in a chemical reaction
263
30 sec
Q.
A chemical property that describes how likely an element is to form bonds with or reacts with other elements.
264
30 sec
Q.
A type of nucleic acid containing the sugar ribose.
265
30 sec
Q.
an element cannot be made by combining 2 or more elements
266
30 sec
Q.
discovered the proton
267
30 sec
Q.
The total amount of dissolved salts in a water sample.
268
30 sec
Q.
unable to dissolve any more solute
269
30 sec
Q.
Fats that are solid at room temperature, such as the fat in meats, poultry skin, and foods made from whole milk. They increase blood cholesterol levels and the risk of heart disease.
270
30 sec
Q.
a series of steps followed by scientific investigators to answer specific questions about the natural world
271
30 sec
Q.
a method of writing very large or very small numbers using exponents with base 10
272
30 sec
Q.
a well-tested idea that explains and connects a wide range of observations
273
30 sec
Q.
A person who uses observations and a systematic method to study the physical world and how everything works
274
30 sec
Q.
The settling of substances at the bottom of a liquid
275
30 sec
Q.
A system of scientific measurement used worldwide and based on metric system standards of measurement
276
30 sec
Q.
all of the numbers in a measurement which are known plus one which is estimated
277
30 sec
Q.
minerals that contain silicon and oxygen and usually one or more other elements
278
30 sec
Q.
sugars found in fruits, vegetables, grains, and milk.
279
30 sec
Q.
A term used in the English System to measure mass
280
30 sec
Q.
two elements that are members of the alkali metals
281
30 sec
Q.
In this state of matter the particles are tightly linked together. They vibrate. The colder it gets the closer together the molecules get and the less they vibrate. This state of matter holds its own shape.
282
30 sec
Q.
A measure of how much solute can dissolve in a given solvent at a given temperature.
283
30 sec
Q.
Substance being dissolved
284
30 sec
Q.
A mixture that forms when one substance dissolves another.
285
30 sec
Q.
A liquid substance capable of dissolving other substances
286
30 sec
Q.
the individual finger paint all elements and compounds have
287
30 sec
Q.
Complex carbohydrate
288
30 sec
Q.
Changing from a liquid to a gaseous vapor. When water is heated it forms a white mist of minute water droplets in the air (steam).
289
30 sec
Q.
a description of a molecule that shows the kind, number, and arrangement of atoms
290
30 sec
Q.
(chemistry) a change directly from the solid to the gaseous state without becoming liquid
291
30 sec
Q.
A disaccharide made of glucose + fructose; Table sugar
292
30 sec
Q.
Like and invisible "skin" that is formed because water molecules have special bonds that hold them together.
293
30 sec
Q.
A mixture containing particles that settle out if left undisturbed
294
30 sec
Q.
not found naturally on earth, all elements higher than 92
295
30 sec
Q.
A measure of the average kinetic energy (motion) of the particles in a sample of matter
296
30 sec
Q.
What are the letter(s) on the periodic table called?
297
30 sec
Q.
The ability of an object to transfer heat
298
30 sec
Q.
discovered the electron
299
30 sec
Q.
1 to 2 valence electrons; group 3-12
300
30 sec
Q.
Allowing light to pass through
301
30 sec
Q.
Evaporation of water from the leaves of a plant
302
30 sec
Q.
an estimate of how much a measured or calculated value differs from a true value
303
30 sec
Q.
standard quantities used to specify measurements
304
30 sec
Q.
Fats that are liquid at room temperature, such as the fat in vegetable oils, nuts, fish, and olives.
305
30 sec
Q.
A liquid's resistance to flow
306
30 sec
Q.
A nutrient that is made by living things, is required in small amounts, and assists in chemical reactions in the body.
307
30 sec
Q.
The amount of space an object occupies; l x w x h
308
30 sec
Q.
vitamin that cannot be stored in the body and needs to be replaced daily.
309
30 sec
Q.
The effect of gravity on mass; differs from earth to space to moon, etc.
310
30 sec
Q.
Man-made elements ( there are 25)
311
30 sec
Q.
chain of amino acids that alone or with other such chains makes up a protein
312
30 sec
Q.
chain of monosaccharides that makes up a complex carbohydrate such as starch
313
30 sec
Q.
molecule in lipids in which carbon atoms are bonded to as many hydrogen atoms as possible
314
30 sec
Q.
Number of electrons that the second and third energy level can hold
315
30 sec
Q.
Substances composed of one or more substances that are not chemically combined and can be separated by physical means
316
30 sec
Q.
A quality or condition of a substance that can be observed or measured without changing the substances composition. Ex: hardness, color, conductivity.
317
30 sec
Q.
A change during which some properties of a material change but the composition of the material. EX: boiling
318
30 sec
Q.
A change that produces matter with a different composition than the original matter. Ex: burning
319
30 sec
Q.
A mixture of different substances that remain physically separate. Ex: saltwater
320
30 sec
Q.
A mixture that is uniform in composition throughout. Ex: air
321
30 sec
Q.
A homogeneous mixture of two or more substances in which the molecules or atoms of the substance are completely dispersed.
322
30 sec
Q.
The tendency of an atom or radical to attract electrons in the formation of an ionic bond. Increases moving across, and decreases moving down.
323
30 sec
Q.
A group in an experiment that is used for comparison.Ex.A group of plants that are grown without miracle-gro.
324
30 sec
Q.
The group exposed to the factor being tested.Ex.A group of plants that are grown with miracle-gro.
325
30 sec
Q.
molecules that have an unequal distribution of charges.Ex.Water molecule