Ccs Chem Chapter 2 Vocab Part 1

Front 1

Matter

Back 1

anything that occupies space and has mass

Front 2

physical property

Back 2

a property of matter that results from the position and characteristics of its particles and that can be measured without causing a change in the identity of the material

Front 3

Matter

Back 3

anything that occupies space and has mass

Front 4

density

Back 4

a measure of the concentration of matter; it is expressed as a ratio of the object's mass to its volume

Front 5

malleability

Back 5

a physical property of matter indicating the capability of matter to be shaped by pounding

Front 6

physical property

Back 6

a property of matter that results from the position and characteristics of its particles and that can be measured without causing a change in the identity of the material

Front 7

density

Back 7

a measure of the concentration of matter; it is expressed as a ratio of the object's mass to its volume

Front 8

ductility

Back 8

a physical property of matter describing its ability to be drawn into a wire

Front 9

malleability

Back 9

a physical property of matter indicating the capability of matter to be shaped by pounding

Front 10

conductivity

Back 10

a physical property of matter indicating the ability to transfer heat or electrons through a substance

Front 11

chemical change

Back 11

chemical reaction; a change in which a substance loses its characteristics and becomes one or more new substances

Front 12

ductility

Back 12

a physical property of matter describing its ability to be drawn into a wire

Front 13

physical change

Back 13

a change that alters the physical properties of a substance (state, size) but that does not change it's identity

Front 14

conductivity

Back 14

a physical property of matter indicating the ability to transfer heat or electrons through a substance

Front 15

chemical change

Back 15

chemical reaction; a change in which a substance loses its characteristics and becomes one or more new substances

Front 16

physical change

Back 16

a change that alters the physical properties of a substance (state, size) but that does not change it's identity

Front 17

chemical reaction

Back 17

chemical change; a change in which a substance loses its characteristics and becomes one or more new substances

Front 18

pure substance

Back 18

a substance that is made up of only one kind of particle and has uniform composition

Front 19

chemical reaction

Back 19

chemical change; a change in which a substance loses its characteristics and becomes one or more new substances

Front 20

pure substance

Back 20

a substance that is made up of only one kind of particle and has uniform composition

Front 21

Element

Back 21

a substance that cannnot be broken down by ordinary chemical means into anything that is both stable and simpler and whose atoms all have the same atomic number

Front 22

solution

Back 22

a homogeneous mixture of two or more substances

Front 23

atom

Back 23

a neutral particle with a centrally located nucleus consisting of protons and neutrons with electrons around it; the smallest representative unit in an element

Front 24

monatomic element

Back 24

an element whose atoms exist as a separate, distinct, independent unit

Front 25

diatomic element

Back 25

an element whose atoms bond into two-atom units

Front 26

polyatomic element

Back 26

an element whose atoms bond into multi-atom units

Front 27

symbol

Back 27

a one- or two-letter representation for an element

Front 28

compound

Back 28

a substance that consists of atoms of different elements chemically bonded together

Front 29

formula

Back 29

a combination of subscripts and chemical symbols that indicate the number and kinds of atoms that are present in a compound

Front 30

subscript

Back 30

a number written at the lower right of a chemical symbol in a formula to indicate he number of components immediately preceding it.

Front 31

coefficient

Back 31

a number that appears in front of a chemical formula and indicates how many units of that substance are present

Front 32

molecule

Back 32

two or more pure substances physically combined with no definite proportions

Front 33

heterogeneous mixture

Back 33

a mixture existing in only one distinctly separate region with its own properties

Front 34

homogeneous mixture

Back 34

a mixture existing in only one distinctly separate region with its own properties

Front 35

exothermic

Back 35

a tern describing a process that releases heat energy

Front 36

endothermic

Back 36

a term describing a process that absorbs heat energy

Front 37

energy

Back 37

the ability to do work