Chem 1/2 Review: Unit 2

The highest point on a wave

• speed

• crest

• frequency

• wavelength

The distance between crest to crest.

• speed

• crest

• frequency

• wavelength

3. The number of waves that pass in a given amount of time.

• speed

• crest

• frequency

• wavelength

A bond between a metal and a nonmetal is called a(n)

• covalent

• metallic

• ionic

• transfer

9. Which of these is covalent?

• NaCl

• CO

• GaP

• MgO

What is a valence electron?

• the sum of neutrons and protons

• a type of bond

• the number of electrons in the last shell

• a popular compound

Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?

• A

• B

• C

• D

Which is the correct molecular structure for carbon dioxide?

• 
• 
• 
• 

What do atoms that form positive ions tend to do?

• lose electrons

• lose protons

• gain electrons

• gain protons

What molecule could this be?

• BF₃

• H₂O

• CH₄

• CO₂