Quiz Unit 2

What type of alloy is made when the radii of the atoms are similar in size?

• interstitial

• substitutional

Which atom has the negative dipole in this molecule?

• Hydrogen

• Fluorine

• Neither

In this molecule, Carbon has a formal charge of ____ and Nitrogen has a formal charge of _____.

• 0, 0

• 1, 0

• 0, -1

• -1, 0

Combustion reactions produce what two substances?

• Water Vapor and Carbon Dioxide

• Carbon Dioxide and Oxygen

• Oxygen and Water Vapor

As the electronegativity difference between 2 atoms increases, the polarity of the bond ____________________

• increases

• decreases

What type of bond forms between hydrogen and chlorine?

• polar covalent

• non-polar covalent

• ionic

• hydrogen bond

What type of alloy is this?

• Interstitial

• Substitutional

What is the total # of covalent bonds carbon can form when drawing a Lewis structure?

• 12

• 6

• 4

• 8

What is the bond angle in BF₃?

• 90

• 120

• 109.5

• 180

What is the bond angle in H₂O?

• 120

• 90

• 180

• 104.5