Bi-Weekly Test Chem

Why kinetic energy increases when potential energy decreases and vice versa.

• Temperature

• Law of Conservation of Energy

• Heat

• To conserve mass

Heat content of a substance at constant pressure.

• heat of vaporization

• heat of fusion

• heat of reaction

• enthalpy

Heat is __ in an endothermic reaction, and heat of reaction is a __.

• absorbed, product

• released, product

• released, reactant

• absorbed, reactant

Energy is __ in an exothermic reaction, and heat of reaction appears as a __.

• absorbed, product

• absorbed, reactant

• released, reactant

• released, product

A reaction where change in enthalpy is positive.

• Exothermic

• Endothermic

• Slow

• Fast

A reaction where change in enthalpy is negative.

• Exothermic

• Endothermic

• Slow

• Fast

A device used to measure energy changes in a chemical or physical change.

• calorimetry

• calorimeter

• thermometer

• None of these

Tells you how 1 gram of a substance heats up when 1 calorie of energy is added.

• Heat

• Energy

• Calorimeter

• Specific Heat

What is the molarity of 3 mole of hydrochloric acid in 3 L of water. 

• 3
• 1
• 6
• 9

What is the molarity of 4 grams of sodium chloride in 3,800 mL of solution?

• 0.018 M
• 0.018 mol
• 1.052 M
• 1.052 mol