WG 2-1 Part 2 Identifying an Atom

When deciding which element an atom represents you should focus on the number of __ in the atom.

• protons

• neutrons

• electrons

The atomic number is equal to the number of __ in an atom.

• protons

• neutrons

• electrons

• protons + neutrons

Drag the correct term over the question mark.

c

Atomic Number

Mass Number

Periodic Number

Identity Number

Tags

NGSS.MS-PS1-1

Drag the correct term over the question mark.

c

Identity Number

Atomic Number

Periodic Number

Mass Number

Tags

NGSS.HS-PS1-1

An atom with only 1 proton is:

• Hydrogen

• Helium

• Lithium

• Sodium

Tags

NGSS.MS-PS1-1

Changing the number of PROTONS ____ the identity of the atom.

• changes

• does NOT change

Tags

NGSS.HS-PS1-8

Changing the number of ELECTRONS ____ the identity of the atom.

• changes

• does NOT change

Atoms of Chlorine will ALWAYS contain __ protons.

• 35.5

• 17

• 1

• 18.5

Tags

NGSS.MS-PS1-1

This is an atom of:

• Magnesium (Mg)

• Titanium (Ti)

• Neon (Ne)

• Helium (He)

Tags

NGSS.MS-PS1-1

• Both represent Carbon (C)

• Left is Magnesium (Mg), Right is Silicon (Si)

• Left is Carbon (C), Right is Oxygen (O)

Tags

NGSS.MS-PS1-1