PS TEST 9/8

What does an element's atomic number represent?

• the element state at room temperature

• how metallic an element is

• the number of atoms in a compound

• the number of protons in an element

How many neutrons are in Nitrogen?

*Click the image to make it larger.

• 14

• 7

• 21

Tags

NGSS.MS-PS1-1

Subatomic particle with a positive charge

• Proton

• Neutron

• Electron

The subatomic particle(s) found in the nucleus of an atom

• Proton

• Neutron

• Electron

Subatomic particle with a negative charge

• Proton

• Neutron

• Electron

Subatomic particle(s) located in the shells outside the nucleus

• Proton

• Neutron

• Electron

The mass of an atom is found by adding which subatomic particles?

• Protons

• Neutrons

• Electrons

The number of _______________ in an atom is represented by its atomic number.

• Protons

• Neutrons

• Electrons

If an atom has 12 neutrons and 11 protons, what is its atomic mass?

Tags

NGSS.MS-PS1-1

In an electrically-neutral atom, what two subatomic particles are equal in number?

• Protons

• Neutrons

• Electrons