Unit 2.2

Front 1

Chemical reactions:

Back 1

a change in which two or more substances combine to form a new substance or substances.

Front 2

Law of Conservation of Mass:

Back 2

Matter is neither created nor destroyed; the amount of matter before a reaction must equal the amount of matter after a reaction.

Front 3

Molecule:

Back 3

the smallest amount of a specific chemical substance (two or more atoms that have bonded together)

Front 4

Chemical bond:

Back 4

The force of attraction that holds atoms together in compounds

Front 5

Compound (molecular & ionic):

Back 5

Any substance formed by the bonding of two or more chemical elements in a certain ratiocination

Front 6

Ion:

Back 6

An atom that is electrically charged, either negatively or positively Ionic bond: A chemical bond between two atoms where one or more electrons are given from one atom to another Chemical

Front 7

formula:

Back 7

A formula used to show the types of atoms and their numbers in an element or compound

Front 8

bond:

Back 8

A chemical bond where electrons are shared between two or more atoms.

Front 9

Subscript:

Back 9

The small characters set below the normal letters or figures, it tells you how many elements are in one compound or molecule,

Front 10

Endothermic reaction:

Back 10

A chemical reaction which absorbs heat; it feels cold.Exothermic reaction: A chemical reaction which releases heat; it feels hot.

Front 11

pH scale:

Back 11

Scale ranging from 0-14, used to describe how acidic or basic a substance is.

Front 12

Neutralization:

Back 12

The reaction that occurs when acidic and basic solutions are mixed, to produce a solution that has neither basic nor acidic properties.

Front 13

Reactant:

Back 13

the elements or compounds that are being combined together during a chemical reaction; found on the left side of the chemical equations.

Front 14

Product:

Back 14

the elements or compounds that are formed as a result of a chemical reaction; found on the right side of the chemical equations.