Unit 3: Atoms Review

a substance with atoms that are all alike (same # protons)

• Element

• Atom

• Nucleus

• Electron

On the periodic table of elements, this tells us how protons are in the atom.

• Mass number

• Atomic number

• Atomic weight

• Periodic number

This is the sum of the atom's protons and neutrons

• Nucleus

• Mass Number

• Atomic Number

• Periodic Number

Subatomic particle that weighs 1 amu and has a POSITIVE charge

• electron

• neutron

• proton

• cation

Subatomic particle that has a mass of 1 amu, and NO charge

• neutron

• electron

• quark

• proton

Subatomic particle that has a NEGATIVE charge

• neutron

• proton

• electron

• anion

In the image provided, which part represents the NUCLEUS

• A

• B

Tags

NGSS.MS-LS1-2

Use a periodic table to complete the following sentence: The element Copper has ____ protons.

Use a periodic table to complete the following sentence: A neutral Neon atom has _____ electrons.

Use a periodic table to complete the following sentence: An atom with 21 protons has a chemical symbol of ___.