Chem 2A- Quiz 1

Front 1

Chemistry

Back 1

the field of study concerned with the characteristics, composition, and transformations of matter.

Front 2

Matter

Back 2

anything that has mass and occupies space.

Front 3

Mass

Back 3

the amount of matter present in a sample.

Front 4

Solid

Back 4

definite shape and a definite volume.

Front 5

Liquid

Back 5

indefinite shape and definate volume

Front 6

Gas

Back 6

indefinate shape indefinate volume

Front 7

Property

Back 7

distinguishing characteristic of a substance that is used in its identification and description

Front 8

Physical property

Back 8

charactersitic of a substance that can be observed w/out changing the basic identity of the substance (odor,color,state)

Front 9

Chemical property

Back 9

charactersitic of a substance that describes the way the subsatance undergoes or resists change to form a new substance.

Front 10

physical change

Back 10

process in which a substance changes its physical appearance but not its chemical composition.

Front 11

chemical change

Back 11

process in which substance undergoes a change in chemical composition.

Front 12

pure substance

Back 12

singel kind of matter that can't be separated into other kinds of matter by any physical means.

Front 13

mixture

Back 13

physcial combination of 2 or more pure substances in which each substance retains its own chemical identity.

Front 14

heterogeneous mixture

Back 14

contains visibly different phases (ie. chocolate chip cookies)

Front 15

homogeneous mixture

Back 15

contains only 1 visibly distinct phase which has uniform properties throughout.

Front 16

element

Back 16

a pure substance that can't be broken down into simpler pure substances by chemical means such as a chemical reaction, an electric current, heat or a beam of light.

Front 17

compound

Back 17

a pure substance that can be broken down into 2 or more simler pure substances by chemical means.(i.e water)

Front 18

chemical symbol

Back 18

a 1 or 2 letter designation fora n element derived from the the element's name.

Front 19

atom

Back 19

smallest particle of an element that can exist and still have the properties of the element.

Front 20

molecule

Back 20

a group of 2 or more atoms that functions as a unit because the atoms are tightly bound together.

Front 21

diatomic molecule

Back 21

molecule that contains 2 atoms.

Front 22

triatomic molecule

Back 22

moleucle that contains 3 atoms.

Front 23

homoatomic molecule

Back 23

a molecule in which all atoms present are of the same kind

Front 24

heteroatomic molecule

Back 24

a molecule in which 2 or more kinds of atoms are present.

Front 25

chemical formula

Back 25

a notation made up of the chemical symbols of the elements present in a compound and numerical subscripts that indicate the number of atoms of each element present in a moleucle of the compound.