8.5a and 8.5b

What kind of charge do electrons have?

• Positive charge

• No charge

• Negative charge

• Electric charge

Tags

NGSS.MS-PS2-3

How do you find the number of neutrons?

• Mass number - Atomic number

• Protons + Neutrons

• Protons + Electrons

• Mass number + Atomic number

What element is located at group 5, period 6?

• Hf

• Ta

• Mo

• Cr

Tags

NGSS.MS-PS1-1

What are electrons in the outermost energy level called?

• Valence electrons

• Valence protons

• Valence neutrons

• Electron cloud

If an atom has an atomic mass of 27 and an atomic number of 13, how many neutrons does it have?

• 13

• 15

• 14

• 12

Tags

NGSS.MS-PS1-1

Where are Electrons located?

• In the nucleus

• In the electron cloud

• Next to the protons

The number located at the top of an element is the ____.

• Mass number

• Neutrons

• Atomic number

• Symbol

What has no charge?

• Proton

• Nonmetal

• Neutron

• Electron

Tags

NGSS.MS-PS2-3

Who created the model that showed the electrons moved in a circular path around the nucleus?

• Niels Bohr

• Ernest Rutherford

• Henry Moseley

• Democritus

How many electrons can the second energy level hold?

• 2

• 8

• 18

• 32