Matter and Atomic Structure

An electron has a _____ charge.

• negative

• positive

• neutral

Tags

NGSS.MS-PS2-3

What are the maximum number of electrons that go on the first 3 energy levels?

• 2,4,16

• 2,8,18

• 4,8,12

• 3,4,6

The subatomic particle that determines the identity of an element.

• neutron

• proton

• electron

• outer shell

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 20

• 10

• 5

• 25

The electrons of an atom are found...

• in the outer "cloud" surrounding the atom.

• in the nucleus of the atom.

• in the cloud and in the nucleus.

The periodic table has __ groups.

• 8

• 7

• 18

• 2

A neutron has a charge of

• +2

• No charge

• -1

• +1

How many Aluminum are in Al₂O₃?

• 3

• 2

• 5

Tags

NGSS.MS-PS1-1

How many Chlorine are in MgCl₂?

• 2

• 1

• 3

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in:
H₂SO₄

• 6

• 5

• 7

• 3

Tags

NGSS.MS-PS1-1