Science Element Builder Vocabulary

Front 1

Atom

Back 1

The Basic Unit of Matter
o An atom is the smallest particle of an element that still has all the properties of the element.
o Atoms are made up of smaller particles called protons, neutrons, and electrons. The smaller electrons orbit around a central nucleus of protons and neutrons.

Front 2

Atomic Number

Back 2

The Number of Protons in the Nucleus of an atom.
Elements are distinguished from one another by their atomic Numbers

Front 3

Electron

Back 3

A negatively charged particle that moves around the nucleus.

Front 4

Electron Dot diagram

Back 4

a diagram that shows the element symbol surrounded by dots representing valence electrons.

Front 5

Element

Back 5

a pure substance that cannot be broken down into simpler substances by ordinary chemical means.

Front 6

Energy Level

Back 6

a particular regions where electrons can orbit the nucleus

Front 7

Ion

Back 7

An atom that has and electrical charge because it has gained or lost electrons.

Front 8

Isotope

Back 8

One of several forms of the same element

Front 9

Mass Number

Back 9

The Number of protons plus neutrons in the in the nucleus

Front 10

Neutron

Back 10

a particle with no charge located in the nucleus of an atom

Front 11

Nucleus

Back 11

The Positively charged particle located in the center of the atom

Front 12

Periodic Table

Back 12

a chart that organized the chemical elements based on their properties.

Front 13

Proton

Back 13

a positively charged particle located in the nucleus of an atom

Front 14

Radioactive

Back 14

capable of releasing the radiation

Front 15

Valence Electrons

Back 15

electrons located in the outermost energy level of an atom