Chemistry 2nd Semester Review

Which compound has a molar mass of 174.3 g/mol? 

• Al(NO₃)₃
• MgCO₃
• K₂SO₄
• Ca(NO₃)₂

How many total atoms are in 4 Ca₃(PO₄)₂? 

• 20
• 36
• 40
• 52

Which is the correct number of valence electrons in the element Sulfur (S)? 

• 6
• 16
• 4
• 2

Which of the following about an ice cube floating in a glass of water is correct? 

• the temperature of the ice cube increases.
• the temperature of the ice cube decreases
• the temperature of the ice cube remains constant
• the temperature of the ice cube is whack!

Which is defined as the combination of pressure and temperature at which all three states of matter can coexist at equilibrium?

• critical point
• triple point
• melting point
• deposition point

Which is the state change that occurs when a solid becomes a gas without becoming a liquid first? 

• vaporization
• sublimation
• deposition
• freezing

Which change in state requires that energy be added to the substance? 

• freezing
• deposition
• condensing
• vaporizing

Which is an intermolecular force?

• ionic bond
• covalent bond
• hydrogen bond
• metallic bond

Which one of these is considered the 'strongest' bond?

• Dispersion force
• Dipole-Dipole
• hydrogen bond
• covalent bond

A 40.0-L sample of fluorine is heated from 90.0°C to 186.0°C. What volume will the sample occupy at the higher temperature? 

• 19.3 L
• 31.6 L
• 50.5 L
• 82.6 L