5-2 What is temperature?
SWBAT: Differentiate between heat and temperature.
temperature: measure of the average kinetic energy of the particles in a sample of matter
calorie: unit of heat; amount of heat needed to raise the temperature of 1 g of water 1°C
Class Notes
• The measure of the average kinetic energy of all the particles in a sample of matter is called temperature.
• Heat and temperature are related, but not the same.
• When you add heat energy to a substance, you change its temperature.
• Two samples of the same substance may have the same temperature but not the same amount of heat.
• One calorie is the amount of heat that will raise the temperature of 1 g of water 1°C.
Discussion Questions:
1. Define: What is temperature?
2. Compare: At the same temperature, which has more heat, the water in a bucket or the water in an ocean?
3. Predict: What happens when you add heat energy to a substance?
Checking Concepts
1. Two samples of the same substance may have the same temperature but not contain the same amount of _________________.
2. When heat is removed from water, its temperature _____________.
3. Heat affects the __________________ of a substance.
4. A __________________ is a unit of heat.
Thinking Critically
5. Compare: Compare the average kinetic energy of the particles in a cup of hot tea to the particles in a glass of iced tea.
temperature: measure of the average kinetic energy of the particles in a sample of matter
calorie: unit of heat; amount of heat needed to raise the temperature of 1 g of water 1°C
Class Notes
• The measure of the average kinetic energy of all the particles in a sample of matter is called temperature.
• Heat and temperature are related, but not the same.
• When you add heat energy to a substance, you change its temperature.
• Two samples of the same substance may have the same temperature but not the same amount of heat.
• One calorie is the amount of heat that will raise the temperature of 1 g of water 1°C.
Discussion Questions:
1. Define: What is temperature?
2. Compare: At the same temperature, which has more heat, the water in a bucket or the water in an ocean?
3. Predict: What happens when you add heat energy to a substance?
Checking Concepts
1. Two samples of the same substance may have the same temperature but not contain the same amount of _________________.
2. When heat is removed from water, its temperature _____________.
3. Heat affects the __________________ of a substance.
4. A __________________ is a unit of heat.
Thinking Critically
5. Compare: Compare the average kinetic energy of the particles in a cup of hot tea to the particles in a glass of iced tea.