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35 Cards in this Set
- Front
- Back
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Matter |
Anything that has mass and takes up space |
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Chemistry |
The study of the properties of matter and how matter changes |
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Substance |
A single kind of matter that is pure, meaning it always has a specific makeup-or composition-and a specific set of properties |
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Physical Property |
A characteristic of a pure substance that can be observed without changing it into another substance |
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Chemical Property |
A characteristic of a pure substance that describes its ability to change into a different substance |
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Element |
A pure substance that cannot be broken down into any other substances by chemical or physical means |
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Atom |
The basic particle from which all elements are made |
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Chemical Bond |
A force of attraction between two atoms |
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Molecules |
Groups of two or more ATOMS held together by chemical bonds |
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Compound |
A pure substance made of two or more elements chemically combined in a set ratio |
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Chemical Formula |
A combination of symbols that represents the elements in a compound and their proportions |
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Mixture |
Two or more substances that are mixed together but not chemically combined |
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Heterogeneous |
A type of mixture in which you can see the different parts |
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Homogeneous |
A type of mixture in which you cannot see the different parts |
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Solution |
An example of a homogeneous mixture |
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Weight |
A measure of the force of gravity on you |
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Mass |
A measurement of the amount of matter in an object |
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International System of Units |
The system of units used by scientists to measure the properties of matter |
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Volume |
The amount of space that matter occupies |
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Volume Formula |
Length x Width x Height |
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Density |
A physical property of matter that relates the mass of a material in a given volume |
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Density Formula |
Mass / Volume |
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Physical Change |
Any change that alters the form or appearance of matter but does not make any substance in the matter into a different substance |
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Chemical Change |
Any change in matter that produces one or more new substances |
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Law of Conservation of Mass |
Matter is not created nor destroyed in any chemical or physical change |
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Energy |
The ability to do work or cause change |
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Temperature |
A measure of the average energy of random motion of particles of matter |
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Thermal Energy |
The total energy of all of the particles in an object |
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Endothermic Change |
A change in which energy is taken in |
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Kinetic Energy |
The energy of matter in motion |
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Potential Energy |
The energy an object has because of its position |
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Chemical Energy |
The internal energy stored in the chemical bonds between atoms (a kind of potential energy) |
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Electromagnetic Energy |
A form of energy that travels through space as waves |
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Electrical Energy |
The energy of electrically charged particles moving from one place to another |
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Electrodes |
Two metal strips, used in electrolysis, that are placed in a solution |
