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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 |
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physical property |
a characteristic of a pure substance that can be observed |
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chemical property |
acharacteristic of a pure substance that changes into different substances. |
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element |
a pure substance that cannot be broken down into any other substances |
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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 oftwo or more atoms held together by chemical bonds. |
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compound |
a pure substance made of two or more elements chemically combined |
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mixture |
made of two or more substances—elements, compounds, or both |
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heterogeneous mixture |
you can see different parts in a mixture |
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homogeneous mixture |
so evenly mixed that you can’t see the differentparts |
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solution
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an example of a homogeneous mixture
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chemical formula
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shows the elements in the compoundand the ratio of atoms
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weight
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a measure of the force of gravity onyou
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mass
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is the object of the measurement of the amount ofmatter in the object
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volume
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The amount of space thatmatter occupies
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Density
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relates themass of a material in a given volume
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International System of Units
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Used To measure the properties of matter
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physical change
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anychange that alters the form or appearance of matter
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chemical change
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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
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energy
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theability to do work or cause change
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tempurature |
a measure of the average energy 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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a change in which energy istaken in
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exothermic change
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releases energy.
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kinetic energy |
theenergy of matter in motion |
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chemical energy |
theenergy an object has because of its position
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potential energy |
theenergy an object has because of its position |
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chemical energy
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The internal energy stored in the chemicalbonds between atoms |
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electromagnetic energy |
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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electrode |
two metal strips that are placed in a solution, |
