Chemistry Unit 2

Front 1

matter

Back 1

anything that has mass and takes up space

Front 2

organic matter

Back 2

(alive or once alive) formulas always start with C (carbon), except for CO2 and CO
Ex: CH4 (methane), CH3OH (methanol)

Front 3

inorganic matter

Back 3

salts, bases, acids, molecular compounds, elements

Front 4

matter is found in 3 phases...

Back 4

solid, liquid, gas

Front 5

mechanical energy

Back 5

energy associated with moving parts

Front 6

potential energy

Back 6

stored or positional energy

Front 7

kinetic energy

Back 7

the energy of motion

Front 8

light energy

Back 8

a type of solar energy

Front 9

heat energy

Back 9

a type of solar energy

Front 10

nuclear energy

Back 10

energy associated with an atom's nucleus

Front 11

sound energy

Back 11

energy associated with sound

Front 12

chemical energy

Back 12

energy stored in chemical bonds

Front 13

law of conservation of matter and energy

Back 13

matter and energy cannot be created or destroyed, only changed from one form to another

Front 14

element

Back 14

pure substance that cannot be separated by physical or chemical means, contain only one kind of atom, and are the simplest form of matter; homogeneous

Front 15

diatomic gases

Back 15

exist bonded in pairs
HOFBrINCl (hydrogen, oxygen, fluorine, bromine, iodine, nitrogen, chlorine)

Front 16

monatomic gases

Back 16

exist as a single atom "molecules"
He, Ne, Ar, Kr, Xe, Rn

Front 17

heterogeneous

Back 17

matter which is not uniform in appearance or composition throughout

Front 18

homogeneous

Back 18

matter which has uniform composition and properties throughout

Front 19

mixture

Back 19

composed of 2 or more substances, but each keeps its original properties

Front 20

substance

Back 20

any kind of matter all specimens of which have the same chemical composition and physical properties

Front 21

compound

Back 21

a substance composed of atoms having an identical number of protons in each nucleus; cannot be reduced to simpler substances by chemical means

Front 22

atom

Back 22

the smallest component of an element having the chemical properties of that element; consists of neutrons, protons, and electron(s)

Front 23

alloy

Back 23

a substance made by melting 2 or more elements together, one of them a metal; crystalizes upon cooling into a solid solution, mixture, or intermetallic compound

Front 24

solution

Back 24

a homogeneous mixture of two or more substance; may exist in any place

Front 25

elements #1-82

Back 25

elements found in nature and stable

Front 26

elements #83-92

Back 26

elements found in nature and unstable (radioactive)

Front 27

elements >92

Back 27

elements that are man-made and unstable (radioactive)