Atoms and the Periodic Table

How do you find out the number of protons in an atom?

• atomic number
• atomic mass
• charge
• atomic mass - atomic number

Which particle has a similar mass to a proton?

• Electron
• Neutron
• Photon
• Marble

The part of the atom that determines the identity of the atom is the ____________.

• proton
• nucleus
• electron
• neutron

How are elements ordered on the Periodic Table?

• Alphabetical Order
• By their color.
• By their atomic mass.
• By their atomic number.

How many neutrons are in the atom "K"?

• 7
• 19
• 39
• 20

Tags

NGSS.MS-PS1-1

Which item on this element square represents the atomic number?

• 13
• Al
• Aluminum
• 26.981538

Which is an electron?

• A
• B
• C

Tags

NGSS.MS-PS1-1

Which is a neutron?

• A
• B
• C

Tags

NGSS.MS-PS1-1

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

Tags

NGSS.MS-PS1-1

What element is this model showing?

• Lithium
• Boron
• Carbon
• Neon

Tags

NGSS.MS-PS1-1