Structure of an Atom

Oxygen’s atomic number is 8. This means that an oxygen atom must have

• 8 electrons

• 8 protons

• 8 neutrons

• a mass number of 8

Tags

NGSS.MS-PS1-1

Which statement best describes an electron?

• Smaller mass than a proton and a negative charge

• Smaller mass than a proton and a positive charge

• Greater mass than a proton and a negative charge

• Greater mass than a proton and a positive charge

Tags

NGSS.MS-PS2-3

What number indicates the nucleus?

• 1

• 2

• 3

• 4

What is at the center of every atom?

• An electron

• A compound

• A molecule

• A nucleus

Label the parts of the element

b

c

d

a

Protons

Neutrons

Electrons

Nucleus

Tags

NGSS.MS-PS1-1

Electrons have a ​ (a)   ​

• negative charge

• positive charge

• neutral charge

Tags

NGSS.MS-PS1-1

Choose the hotspot that best identifies the nucleus of this atom.

Tags

NGSS.MS-PS1-1

Label the atom

a

b

d

c

Nucleus

Proton

Neutron

Electron

Tags

NGSS.MS-PS1-1

label the atom correctly

a

b

c

d

e

neutron

nucleus/mass

electron cloud

electron

proton

Tags

NGSS.MS-PS1-1

Label the parts of an atom

a

b

c

neutrons

electrons

protons

Tags

NGSS.MS-PS1-1