Atoms, Ions, & Isotopes

What charge does an atom have when it GAINS electrons?

• Positive

• Negative

• Neutral

Which of the following is a representation of an ion?

• Li

• Na-22

• O^-2

What is the mass number of bromine?

• 35

• 45

• 80

• 79.904

Tags

NGSS.MS-PS1-1

How many neutrons does this bromine atom have?

• 35

• 45

• 80

Tags

NGSS.MS-PS1-1

What type of atom is this?

• Neutral atom

• Cation

• Anion

• Isotope

Tags

NGSS.MS-PS1-1

What two particles determine the mass number?

• Protons and electrons

• Electrons and neutrons

• Protons and neutrons

Tags

NGSS.HS-PS1-8

How many neutrons does this isotope of Carbon have?

• 6

• 14

• 8

• 20

What is the mass number of this Neon atom?

• 10

• 11

• 21

• 20

Tags

NGSS.MS-PS1-1

How many electrons does this magnesium ion have?

• 24

• 12

• 10

• 14

Tags

NGSS.MS-PS1-1

How does an atom become an ion?

• A change in the number of electrons

• A change in the number of protons

• A change in the number of neutrons