Ch 2: Chemistry Of Life

Front 1

Matter -

Back 1

Is anything that occupies space and has mass.

Front 2

Mass -

Back 2

Is the quantity of matter an object has.

Front 3

Elements -

Back 3

Substances that cannon be broken down chemically into simpler kinds of matter.

Front 4

Atom -

Back 4

Simplest particle of an element that retains all of the properties of that element.

Front 5

Nucleus -

Back 5

Makes up the bulk of the mass of the atom and consists of two kinds of subatomic particles, a proton and a neutron.

Front 6

Atomic Number -

Back 6

The number of protons in an atom.

Front 7

Mass Number -

Back 7

Is equal to the total number of protons and neutrons of the atom.

Front 8

Electrons -

Back 8

Negatively charged particles.

Front 9

Orbital -

Back 9

A three-dimensional region around a nucleus that indicates the probable location of an electron.

Front 10

Isotopes -

Back 10

Atoms of the same element that have a different number of neutrons.

Front 11

Compounds -

Back 11

Are made up of atoms of two or more elements in fixed proportions.

Front 12

Chemical Bonds -

Back 12

The attractive forces that hold atoms together.

Front 13

Covalent Bond -

Back 13

Forms when two atoms share one or more pairs of electrons.

Front 14

Molecule -

Back 14

Simplest part of a substance that retains all of the properties of that substance and cam exist in a free state.

Front 15

Ion -

Back 15

An atom or molecule with an electrical charge.

Front 16

Ionic bond -

Back 16

The attraction of positive and negative charges.