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Q 1/46
Score 0
A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical properties are grouped together.
45
Periodic Table
Q 2/46
Score 0
A measure of the amount of matter in an object
30
mass
46 questions
Q.
A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical properties are grouped together.
1
45 sec
Q.
A measure of the amount of matter in an object
2
30 sec
Q.
Anything that has mass and takes up space
3
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matter that has a uniform and unchanging composition
4
30 sec
Q.
A characteristic of a pure substance that can be observed without changing it into another substance
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Q.
A characteristic of a pure substance that describes its ability to change into different substances
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30 sec
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A pure substance made of only one kind of atom
7
30 sec
Q.
(physics and chemistry) the smallest component of an element having the chemical properties of the element
8
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Q.
two or more atoms held together by covalent bonds
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A substance made up of atoms of two or more different elements joined by chemical bonds
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A combination of chemical symbols and numbers to represent a substance
11
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Q.
A combination of two or more substances that are not chemically combined
12
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Q.
A mixture that is not uniform in composition; components are not evenly distributed throughout the mixture
13
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a mixture that is uniform in composition; components are evenly distributed and not easily distinguished
14
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a homogeneous mixture of two or more substances uniformly dispersed throughout a single phase
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Q.
A change in matter that produces one or more new substances
16
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A change in a substance that does not involve a change in the identity of the substance
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Q.
Matter is not created nor destroyed in any chemical or physical change
18
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The physical forms of matter, which include solid, liquid, and gas
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A form of matter that has a definite shape and volume
20
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A state of matter that has no definite shape but has a definite volume.
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A state of matter with no definite shape or volume
22
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Q.
A change directly from the solid to the gaseous state without becoming liquid
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Q.
a state of matter that consists of free-moving ions and electrons
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the process of a gas becoming a plasma by the stripping of electrons
25
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The process of a plasma becoming a gas
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The change of state from a liquid to a gas
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(of a chemical reaction or compound) occurring or formed with absorption of heat
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Chemical Reaction in which energy is primarily given off in the form of heat
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A chemical substance that is present at the start of a chemical reaction
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Q.
A substance produced in a chemical reaction
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Q.
A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
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Q.
A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
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Q.
discovered the electron, plum pudding model
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Q.
discovered the nucleus
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Q.
1913- discovered that electrons move around the nucleus in orbits called electron shells.
36
30 sec
Q.
a region around the nucleus of an atom where electrons are likely to be found- Current Theory of atoms
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Q.
A subatomic particle that has a positive charge and that is found in the nucleus of an atom
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A subatomic particle that has no charge and that is found in the nucleus of an atom
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A subatomic particle that has a negative charge
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Q.
Atoms of the same element that have different numbers of neutrons
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Q.
An atom or group of atoms that has a positive or negative charge.
42
30 sec
Q.
Mass per unit volume
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Q.
the sum of the number of neutrons and protons in an atomic nucleus
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Q.
the number of protons in the nucleus of an atom
45
30 sec
Q.
Electrons on the outermost energy level of an atom
