Isotopes, Ions, Weighted Averages QUIZ

Adding or subtracting neutrons changes the atom into an...

• ion
• isotope
• neutral atom

What is the charge on a lithium atom that loses 1 electron?

• +1
• 0
• -1
• -2

Is the model shown representing at atom or an ion?

• atom
• ion

The atomic mass is equal to _.

• the number of protons only
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons, neutrons, and electrons.

Which isotope has  4 neutrons?

• Li-6
• Li-7
• Li-8
• they have the same # of neutrons

How many neutrons does this bromine atom have?

• 35

• 45

• 80

How many protons, neutrons, and electrons?

• proton = 16, neutron = 8, electron = 10

• proton = 8, neutron = 16, electron = 8

• proton = 8, neutron = 8, electron = 10

• proton = 6, neutron = 2, electron = 6

Atoms of the same element that have different mass than expected because they have a different number of neutrons.

• Neutral Atom

• Ion

• Isotope

• Cation

A neutral atom would become an ion that has a charge of 2+ by 

• Losing two protons
• Losing two neutrons
• Losing two electrons

If an atom has 9 protons and 10 electrons it has a charge of ____.

• 0

• -1

• +1

• -2