Chemistry Semester Review (Friday DLD)

What is a representation of an ion?

• Li

• Na-22

• O^-2

What charge does an atom have when it GAINS electrons?

• Positive

• Negative

• Neutral

What is the mass number of bromine?

• 35

• 45

• 80

• 79.904

How many neutrons does this bromine atom have?

• 35

• 45

• 80

What type of atom is this?

• Neutral atom

• Cation

• Anion

• Isotope

What two particles determine the mass number?

• Protons and electrons

• Electrons and neutrons

• Protons and neutrons

What type of atom is this?

• Normal Atom

• Cation

• Anion

• Isotope

What is the mass number of this Neon atom?

• 10

• 11

• 21

• 20

How many electrons does this magnesium ion have?

• 24

• 12

• 10

• 14

What does it change in an ion?

• The number of electrons

• The number of protons

• The number of neutrons