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Q 1/174
Score 0
The order of elements in the periodic table is based on
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Atomic Mass
The electric charge of the nucleus
The number of Neutrons in the nucleus
Atomic Number
Q 2/174
Score 0
Refer to the Periodic Table of Elements . Which element group is made up of shiny solids that are extremely reactive with water?
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Group 16, the chalcogens
Group 18, the noble gases
Group 1, the alkali metals
Group 14, the tetrels
174 questions
Q.
The order of elements in the periodic table is based on
1
30 sec
Q.
Refer to the Periodic Table of Elements . Which element group is made up of shiny solids that are extremely reactive with water?
2
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Q.
Refer to the Periodic Table of Elements . Sulfur (S) is a nonmetal, a poor conductor of heat and electricity. Which of the elements listed below shares these properties?
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Refer to the Periodic Table of Elements . Which element group has physical and chemical properties of metals?
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This person developed the first Periodic Table.
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Refer to the Periodic Table of Elements . Silicon (Si) is a metalloid, with physical and chemical properties of both metals and nonmetals. Which of the elements listed below is also a metalloid?
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Refer to the Periodic Table of Elements . Which of these elements has atoms with the same outer energy level configuration as atoms of the element aluminum (Al)?
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Refer to the Periodic Table of Elements . Iron (Fe) is a metal, a shiny solid at room temperature and a good conductor of heat and electricity. Which of the elements listed below shares these properties?
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Which statement about valence electrons and the organization of the periodic table is TRUE?
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The outermost electons of an atom are also called _________ electrons
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Dot diagrams are used to represent ____.
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Elements that are either brittle, gases at room temperature, or poor conductors are ____.
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A chemical symbol represents the ____ of an element.
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Horizontal rows of the periodic table are called ____.
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Each inner energy level of an atom has a maximum number of ____ it can hold.
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Three examples of physical changes are:
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The shape of an apple is a:
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Pizza is an example of a _________ because we can easily separate the substances by physical means.
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When a log burns in a fire:
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Which of the following are considered matter?
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Substances that have atoms that are all alike are called:
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When we study ______________ we are studying the composition, structure, and properties of matter and the changes that matter undergoes.
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We call the smallest unit of an element that maintains the properties of that element a(n):
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The ability to conduct heat, electricity, or sound is called _______
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Which of the following substances has good luster?
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Salt will dissolve in water. Based on this statement, which statement about salt is true?
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Smashing a toy with a hammer.
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Milk spoils
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Mass of the matter in a chemical reactions is the same before and after the reaction.
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Corrosion (rusting) of a nail.
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Used to separate two liquids using their boiling points.
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Formation of water when hydrogen burns
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Sharpening a crayon
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Formation of bubbles when two chemicals mix together.
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Hydrogen Peroxide reacts with dirt to produce bubbles
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Inflating a balloon
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Melting ice to create water
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The mass of the substance going into a reaction is 63.2 g and the mass after the reaction is 63.2 g.
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Fragrance of a Rose
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Tastes sour
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Flammability of a metal
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Boils at 389 K
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The size of a train.
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Forms bubbles when mixed with water.
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Flammable in the presence of Oxygen
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Can neutralize an acid.
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Changes color when added to hydrogen peroxide.
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Q.
Match letter A on the wave diagram with the appropriate word from the drop down list below.
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Match letter B on the wave diagram with the appropriate word from the drop down list below.
49
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Match letter C on the wave diagram with the appropriate word from the drop down list below.
50
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Match letter D on the wave diagram with the appropriate word from the drop down list below.
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Match letter E on the wave diagram with the appropriate word from the drop down list below.
52
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This where a medium (like a rope) would be if there was no disturbance moving through it.
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A _____ is a region in a compressional wave where particles of a medium are close together.
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The time required for one cycle, a complete motion that returns to its starting point, is called a(n) ____ .
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The material through which a wave travels is called the ______.
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This type of wave causes the medium to vibrate at right angles to the direction that the wave travels.
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This type of wave is a combination of a transverse and compressional wave.
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This is the SI unit for frequency.
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As the energy of a wave increases, the _______of the wave increases.
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The entire range of electromagnetic frequencies
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Sounds is this type of wave.
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As the frequency of a wave increases, the wavelength
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Electromagnetic waves ____.
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Waves carry energy from place to place ____ transporting matter.
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One Hertz is one vibration per
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A wave will travel only as long as it has ____ to carry.
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The spread apart portion of a compressional wave is called a
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As the frequency of a wave increases, the energy in the wave
69
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Gamma rays are dangerous because they ____.
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With a ____ wave, the movement of matter is in the same direction as the wave travels.
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Which type of electromagnetic radiation the lowest frequency?
72
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The ____ of a wave depends upon the material the wave travels through.
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Overexposure to ____ can cause skin damage and cancer
74
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Radiation therapy uses ____ to kill diseased cells
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The ____ of light determines whether a metal plate will eject electrons.
76
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Seismic waves are ____ waves.
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____ waves need a medium.
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____ can heat your food.
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The electromagnetic waves with wavelengths slightly shorter than visible light are ____.
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The warmth you feel from a fire is due to
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Television uses ____ to transmit signals.
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The unit for the answer above.
83
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What is the wavelength of a P-wave from an earthquake if it has a frequency of 42 Hz and a speed of 7000 m/s? Just enter the number, no units necessary.
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The unit for the answer above.
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The unit for the answer above.
86
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the substances that react during a chemical reaction
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when one element replaces another element in another compound
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an equation which has the same number of atoms of each element on both sides of the equation
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when a substance gains electrons
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a substance reacts with oxygen to produce energy in the form of heat and light
91
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a way to describe a chemical reaction using chemical formulas and other symbols
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two different compounds exchange positive ions to form two new compounds
93
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mass of all substances that are present before a chemical change equals the mass of all of the substances that remain after the change
94
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one substance breaks down into two or more substances
95
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when a substance loses electrons
96
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the substances that are produced during a chemical reaction
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reaction in which electrons are transferred from one reactant to another
98
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two or more substances combine to form one substance
99
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The energy required to break the original bonds is less than the energy release when new bonds form in a(n) ____ reaction.
100
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If heat must be added to a chemical reaction for the reaction to take place, the reaction is ____.
101
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What type of reaction is shown in the following chemical equation: NH3 + HCl --> NH4Cl?
102
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When one element replaces another element in a compound, the reaction is a ____ reaction.
103
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A substance that speeds up a chemical reaction without being permanently changed itself is a(n) ____.
104
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Substances that prevent, or slow down, chemical reactions are called ____.
105
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A chemical reaction in which heat energy is released is ____.
106
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What is an insoluble compound that forms during a chemical reaction?
107
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Each substance to the right of the arrow in a chemical equation is a(n) ____.
108
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According to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants?
109
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Q.
The burning of wood in a campfire that produces heat and light would be both an ____ and an ____ reaction.
110
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Q.
Because a water molecule has a slight positive charge at one end and a slight negative charge at the other end, it is a nonpolar molecule.
111
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Q.
Particles formed from the covalent bonding of atoms are called ions.
112
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Ionic compounds are neutral overall.
113
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When an atom gains or loses electrons, the charged particle that results is called a molecule.
114
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An atom is chemically unstable when its outer energy level contains an octect of electrons.
115
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An element's oxidation number indicates how many electrons the element must gain, lose, or share to become stable.
116
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In a chemical formula, the number of each type of atom in the compound is shown by numbers called ____.
117
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The elements that make up a compound and the exact number of atoms of each element in a unit of the compound can be shown in a ____.
118
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A chemical bond that occurs when atoms share electrons is a(n) ____ bond.
119
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The two exceptions to the Octet Rule:
120
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The sum of the oxidation numbers in a neutral compound is always ____.
121
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The oxidation number of an atom is shown with a ____.
122
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How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?
123
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What kind of chemical bond is formed when an exchange of electrons occurs?
124
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How many hydrogen atoms are present in one molecule of ammonium acetate, NH₄C₂H₃O₂?
125
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Why do the noble gases NOT form compounds readily?
126
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What is the number of potassium atoms compared to oxygen atoms in a binary compound made from these two elements?
127
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What is the oxidation number of phosphorous in K₃P?
128
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What type of bonding is pictured in figure 20-3?
129
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A charged group of atoms.
130
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A compound composed of two elements
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A molecule with partially charged areas
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A positively or negatively charged particle.
133
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A chemical bond between oppositely charged ions.
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A particles made up of covalently bonded atoms.
135
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Shows bonds between elements as lines.
136
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The force that holds atoms together in a compound.
137
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solids, semi-conductors, also called semimetals
138
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most are located on the upper right side of the periodic table
139
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located in a stair-step pattern on the right side of the periodic table
140
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have luster, good conductors, high density
141
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located in the middle and left side of periodic table
142
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do not conduct heat or electricity well, brittle
143
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Chlorine
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Group 18
145
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Group 1
146
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Full Outer Energy Shell
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One Valence electron
148
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Group that is known to be stable:
149
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Lithium
150
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Seven Valence electrons
151
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Potassium
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Kyrpton
153
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Group 17
154
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Two Valence Electrons
155
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Group 2
156
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Q.
Name the atomic model
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Name the atomic model
158
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Name the atomic model
159
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Q.
What is the definition of an Atom?
160
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Q.
What is the definition of the nucleus?
161
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What is the definition of a proton?
162
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What is the definition of a neutron?
163
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What is the definition of an electron?
164
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What is the best definition for quarks?
165
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What is the definition of an isotope?
166
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What is the definition of an electron cloud?
167
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Q.
Which best fits the contribution of Rutherford?
168
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Q.
Which modern scientist developed the first model of an atom?
169
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How many flavors of quarks are there?
170
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A chemical symbol represents the ____ of an element.
171
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A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ____.
172
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Mercury has an atomic number of ______. This means it has _____ protons.