Chemistry Unit 2 Review

What happens when an electron in the ground state absorbs energy?

• Jumps to the excited state

• The electron loses energy

• The electron splits into two particles

• The electron forms a new element

• Arsenic

• Magnesium

• Oxygen

• Sodium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Identify a substance that is lustrous, malleable, a good conductor of electricity and reacts with acid.

• Metal

• Nonmetal

• Metalloid

• Noble Gas

Which of the following is most likely to be a solid at room temperature?

• Gallium

• Oxygen

• Chlorine

• Bromine

Tags

NGSS.MS-PS1-4

Which of the following is most likely to be a gas at room temperature?

• Argon

• Magnesium

• Silicon

• Aluminum

Tags

NGSS.MS-PS1-4

An unknown element is brittle, dull and does not conduct heat or electricity. Identify the unknown.

• Phosphorous

• Calcium

• Aluminum

• Arsenic

An unknown element is malleable, conductive and reacts with acid. Identify the unknown.

• Potassium

• Phosphorous

• Arsenic

• Silicon

Elements with the same number of ​ (a)   have similar properties.

• valence electrons
• neutrons
• orbitals

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• Fluorine

• Potassium

• Nickel

• Oxygen

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• Potassium

• Sodium

• Copper

• Calcium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2