Atoms Ions and Isotopes

Label the two parts of the atom here.

b

a

Electron cloud

Nucleus

Tags

NGSS.MS-PS1-1

Match the following mass amounts with the proper charge.

• (-) negative

• Electron

• (0) neutral, no charge

• Neutron

• (+)positive

• Protons

The diagram shows a model of an atom. The model contains 3 different subatomic particles. ​ (a)   have either a positive or a neutral charge. ​ (b)   ​ has a negative charge.

• Particle X and Y
• Particle Z

Tags

NGSS.MS-PS1-1

The atomic mass of an element is the ____.

• total mass of the isotopes of the element

• total number of subatomic particles in its nucleus

• weighted average of the masses of the isotopes of the element

• average of the mass number and the atomic number for the element

Label the element with what the different parts represent.

a

b

c

d

Atomic Mass

Element Symbol

Atomic Number

Element Name

What is a positive ion called?

• anion

• cation

• isotope

• covalent

What is a negative ion called?

• anion

• cation

• covalent

• isotope

If an element has 3 valence electrons, what charge will likely form on its ion ?

• +3
• +5
• -3
• -5

Tags

NGSS.HS-PS1-1

What is the charge of an atom that has gained one electron?

• -1
• -2
• +1
• +2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many neutrons in C-14?

• 6
• 7
• 14
• 8

Tags

NGSS.HS-PS1-8