Matter and Change

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29 Terms

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chemistry

the study of the composition, structure, and properties of matter and the changes it undergoes

<p>the study of the composition, structure, and properties of matter and the changes it undergoes</p>
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chemical

any substance that has a definite composition

<p>any substance that has a definite composition</p>
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atom

the smallest unit of an element that maintains the properties of that element

<p>the smallest unit of an element that maintains the properties of that element</p>
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element

a pure substance made of only one kind of atom

<p>a pure substance made of only one kind of atom</p>
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mass

a measure of the amount of matter

<p>a measure of the amount of matter</p>
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matter

anything that has mass and takes up space

<p>anything that has mass and takes up space</p>
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compound

a substance that is made from the atoms of two or more elements that are chemically bonded

<p>a substance that is made from the atoms of two or more elements that are chemically bonded</p>
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physical property

a characteristic that can be observed or measured without changing the identity of the substance

<p>a characteristic that can be observed or measured without changing the identity of the substance</p>
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change of state

a physical change of a substance from one state to another

<p>a physical change of a substance from one state to another</p>
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chemical property

the ability of a substance to undergo a change that transforms it into a different substance

<p>the ability of a substance to undergo a change that transforms it into a different substance</p>
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gas

the state of matter in which a substance has neither definite volume nor definite shape

<p>the state of matter in which a substance has neither definite volume nor definite shape</p>
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liquid

the state of matter in which the substance has a definite volume but an indefinite shape

<p>the state of matter in which the substance has a definite volume but an indefinite shape</p>
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physical change

a change in a substance that does not involve a change in the identity of the substance

<p>a change in a substance that does not involve a change in the identity of the substance</p>
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plasma

a high-temperature physical state of matter in which atoms lose their electrons

<p>a high-temperature physical state of matter in which atoms lose their electrons</p>
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solid

the state of matter in which the substance has definite volume and definite shape

<p>the state of matter in which the substance has definite volume and definite shape</p>
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chemical change

a change in which one or more substances are converted into different substances

<p>a change in which one or more substances are converted into different substances</p>
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chemical reaction

a reaction in which one or more substances are converted into different substances

<p>a reaction in which one or more substances are converted into different substances</p>
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product

a substance that is formed by a chemical change

<p>a substance that is formed by a chemical change</p>
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reactant

a substance that reacts in a chemical change

<p>a substance that reacts in a chemical change</p>
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mixture

a blend of two or more kinds of matter, each of which retains its own identity and properties

<p>a blend of two or more kinds of matter, each of which retains its own identity and properties</p>
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heterogeneous

not having a uniform composition throughout

<p>not having a uniform composition throughout</p>
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homogeneous

having a uniform composition throughout

<p>having a uniform composition throughout</p>
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pure substance

a substance that has a fixed composition and differs from a mixture in that every sample of a given pure substance has exactly the same characteristic properties and composition

<p>a substance that has a fixed composition and differs from a mixture in that every sample of a given pure substance has exactly the same characteristic properties and composition</p>
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family

a vertical column of the periodic table

<p>a vertical column of the periodic table</p>
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group

a vertical column of the periodic table

<p>a vertical column of the periodic table</p>
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period

a horizontal row of elements in the periodic table

<p>a horizontal row of elements in the periodic table</p>
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metal

an element that is a good conductor of heat and electricity

<p>an element that is a good conductor of heat and electricity</p>
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nonmetal

an element that is a poor conductor of heat and electricity

<p>an element that is a poor conductor of heat and electricity</p>
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metalloid

an element that has some characteristics of metals and some characteristics of nonmetals

<p>an element that has some characteristics of metals and some characteristics of nonmetals</p>