Intro to Thermochemistry

The amount of heat that raises the temperature of 1 g of pure water 1°C

• energy

• calorie

• heat capacity

• exothermic process

The capacity to do work or to supply heat

• heat capacity

• specific heat

• enthalpy

• energy

A process that loses heat to the surroundings

• energy

• heat capacity

• law of conservation of energy

• exothermic process

A law that states energy is neither created nor destroyed.

• energy

• law of conservation of energy

• heat capacity

• exothermic process

Energy that always flows from a warmer object to a cooler object

• heat capacity

• calorie

• energy

• specific heat

the amount of heat required to raise the temperature of 1 gram of a substance 1°C

• heat

• specific heat

• calorie

• energy

The mass of a sample is 12g. There’s a temperature change from 20°C to 35°C when it absorbed 500 J of heat. What is the specific heat of this sample?

• 8.67 J/g•°C

• 2.78 J/g•°C

• 1.23 J/g•°C

• 108.67 J/g•°C

How much heat must be added to a 9.81 g sample of gold to increase its temperature by 6.5°C? The specific heat of gold is 0.13J/g•°C

• 160.512 Joules

• 8.289 Joules

• 185.142 Joules

• 185,142 Joules

How many grams of water are needed to raise the temperature by 17°C, and using 350 J of energy?

• 4.62 grams

• 4.92 grams

• 4.58 grams

• 5.01 grams

How many grams of Aluminum are needed to raise the temperature by 12°C, and using 50 J of energy? Specific heat of Aluminum is 0.902 J/g•°C

• 4.62 grams

• 4.58 grams

• 4.92 grams

• 5.01 grams