The Science of Chemistry - Chapter 1

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Chemistry

43 Terms

1

chemical

any substance that has a definite composition

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2

chemical reaction

the process by which one or more substances change to produce one or more different substances

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3

states of matter

the physical forms of matter, which include solid, liquid, gas, and plasma

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4

Reactant

a substance or molecule that participates in a chemical reaction

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5

product

a substance that forms in a chemical reaction

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6

Matter

Anything that has mass and takes up space

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7

Volume

A measure of the size of a body or region in three-dimensional space

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8

Mass

A measure of the amount of matter in an object

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9

Weight

A measure of the gravitational force exerted on an object.

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10

quantity

something that has magnitude, size, or amount

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11

unit

a quantity adopted as a standard of measurement

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12

conversion factor

a ratio derived from the equality between two different units that can be used to convert from one unit to the other

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13

physical property

a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness

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14

Density

the ratio of the mass of a substance to the volume of the substance

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15

chemical property

a property of matter that describes a substance's ability to participate in chemical reactions

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16

atom

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

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17

pure substance

a sample of matter, either a single element or a single compound, that has definite chemical and physical properties

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18

element

a substance that can't be separated or broken down into simpler substances by chemical means

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19

molecule

the smallest unit of a substance that keeps all of the physical and chemical properties of that substance

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20

compound

a substance made up of atoms of two or more different elements joined by chemical bonds

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21

mixture

a combination of two or more substances that are not chemically combined

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22

homogeneous

describes something that has a uniform structure or composition throughout

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23

heterogeneous

composed of dissimilar components

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24

physical change

change in 1 or more physical properties without a change to chemical properties

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25

chemical change

changes into entirely new substance

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26

chemical properties

reactivity, flammability, toxicity, corrosive

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27

physical properties

color, size, melting point, boiling point, density, ductile

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28

chemistry

study of the compositions of matter and the changes that matter undergoes

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29

macroscopic

substances that can be seen or touched

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30

microscopic

smaller particles that make up matter, need microscope to been seen

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31

solid, liquid, gas, plasma

what are the 4 states of matter?

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32

meter

what is the SI base unit for length?

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33

liter

what is the SI base unit for liquid volume?

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34

kilogram

what is the SI base unit for mass?

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35

d=m/v

what is the formula for density?

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36

Kelvin

what is the SI base unit for temperature?

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37

diatomic

includes two of the same element

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38

T

T/F: elements are pure substances

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39

suspension

a mixture containing particles that settle out if left undisturbed

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40

colloid

mid-size particles that do not settle out

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41

solution

a mixture containing atoms, ions, or molecules fully dissolved

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42

solvent

dissolving medium

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43

solute

"stuff" being dissolved

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