Identifying Atoms

What is the mass number of Magnesium (Mg) that has 12 neutrons?

• 24
• 12
• 16
• 32

Tags

NGSS.MS-PS1-1

An atom that has 12 protons, 13 neutrons, and 13 electrons has a neutral charge.

• false
• true

Tags

NGSS.MS-PS1-1

What subatomic particle has a positive charge?

• neutron
• electron
• electron cloud
• proton

The number of protons gives you what information about an atom?

• charge of atom
• number of neutrons
• identity

Do the neutrons affect the overall charge of an atom?

• yes
• no

What is the charge of a neutron?

• negative
• neutral
• positive

An atom has 5 protons, 5 electrons, and a mass of 11.  How many neutrons does the atom have?

• 5
• 6
• 11
• 12

Tags

NGSS.MS-PS1-1

Where are the electrons located?

• electron cloud around the nucleus
• inside the nucleus
• they don't exsist

Which statement is true about the nucleus?

• It has mass and a positive charge
• It has mass and a negative charge
• It has no mass and no charge
• It has no mass and a negative charge

Which 2 subatomic particles make up the mass of an atom?

• only protons
• protons + electrons
• proton + neutron
• electrons only