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33 Cards in this Set
- Front
- Back
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Matter |
Anything that 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. |
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Physical propertey |
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 tochange into different substances. |
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Element |
A puresubstance that cannotbe brokendowninto any other sub-stances by chemical or physical means.
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Atom |
The basic particlefrom which all elements are made.
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Molecule |
—groups oftwo or more atoms held together by chemical bonds.
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Compound |
A pure substance made of two or more elements chemically combinedin a set ratio.
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Chemical formula |
A compound may be represented by a blank, which shows the elements in the compoundand the ratio of atoms.
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Mixture |
Made of two or more substances—elements, compounds, or both—that are together in the sameplace but are not chemically combined.
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Hererogenous mixture |
In a blank , you can see the different parts.
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Homogeneous mixture
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The substances in a blank ,are so evenly mixed that you can’t see the differentparts.
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Solution |
A blank does not have to be a liquid, however.Air is a blank of nitrogen gas (N2) and oxygengas (O2), plus small amounts of a few other gases.
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Weight |
A measure of the force of gravity on you. |
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Mass |
An object is the measurement of the amount of matter in the object. |
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International System of units |
To measure the properties of matter, scientists use a system called the blank. |
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Volume |
The amount of space that matter occupies is called it's blank. |
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Density |
Themass of a material in a given volume. |
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Physical change |
Anychange that alters the form or appearance of matter but doesnot make any substance in the matter into a different substance. |
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Chemical change |
A change in matter thatproduces one or more new substances.
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law of conservation of mass
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The factthat matter is not created or destroyed in any chemical or physicalchange is called the blank.
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Energy |
Theability to do work or cause change. |
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Tempature |
measure of the averageenergy of random motion of particles of matter.
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Thermal energy
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the total energy of all of the particles inan object.
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Endothermic change
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Change in which energy istaken in.
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Exothermic change
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An blank releases energy.
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Kinetic energy |
Theenergy of matter in motion. |
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Potential energy |
Theenergy an object has because of its position.
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Chemical energy |
A form of potential energy that issometimes called chemical energy.
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Electromagnetic Energy
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A form of energy that travels throughspace as waves.
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Electrical energy |
The energy of electricallycharged particles moving from oneplace to another.
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Electrodes |
Placed in a solution,but the electrodes do not touch.
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