Atoms, Elements, And The Periodic Table

Front 1

Matter

Back 1

Anything that has mass and takes up space.

Front 2

Atom

Back 2

Defined as a small particle that makes up most types of matter.

Front 3

Law Conservation of Matter

Back 3

Matter is not created nor destroyed, it only changes form.

Front 4

Electron

Back 4

Invisible, negatively charged particles.

Front 5

Nucleus

Back 5

Positively charged, central part of the atom.

Front 6

Protons

Back 6

Positively charged particles in the nucleus.

Front 7

Neutrons

Back 7

Particles from the nucleus that have no-charge.

Front 8

Element

Back 8

Matter made up of only one kind of atom.

Front 9

Atomic Number

Back 9

The top number on the periodic table elements, tells how many protons are in the nucleus.

Front 10

Isotopes

Back 10

Atoms of the same element that have different numbers of neutrons.

Front 11

Mass Number

Back 11

The number of protons plus the number of neutrons it contains.

Front 12

Atomic Mass

Back 12

The weighted average mass of the isotopes of an element.

Front 13

Metals

Back 13

Generally have a shiny or metallic luster and are good conductors of heat and electricity.

Front 14

Non-Metals

Back 14

Elements that are usually dull in appearance.

Front 15

Metalloids

Back 15

Elements that have characteristics of metals and non-metals.

Front 16

Substance

Back 16

Matter that has the same composition and properties throughout.

Front 17

Compound

Back 17

A substance whose smallest unit is made up of atoms of more than one element bonded together.

Front 18

Mixture

Back 18

When two or more substances, elements, or compounds come together but don't combine to make a new substance it is called a _______.