What parts of an atom add mass?

• electrons and protons

• electrons and neutrons

• protons and neutrons

What charge does a proton have?

• positive

• negative

• neutral

What charge does a neutron have?

• positive

• negative

• neutral

What charge does an electron have?

• positive

• negative

• neutral

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

An atom has 3 protons, 3 neutrons, and 4 electrons. Is it an ion or a neutral atom?

• ion

• neutral

• both

What element has 12 protons?

• Carbon (C)

• Magnesium (Mg)

• Fluorine (F)

• Hydrogen (H)

What element has 9 protons?

• Carbon (C)

• Magnesium (Mg)

• Fluorine (F)

• Hydrogen (H)

What is the atomic mass of Neon (Ne)?

• 20.179

• 10

• 2-8

What is the atomic mass of Lithium (Li)?

• 6.941

• 3

• 2-1

• 1

How many neutrons does Beryllium (Be) usually have?

• 4

• 9

• 5