Energy and Change

What is the definition of energy?

• The capacity to do work

• The physical state of matter

• The transfer of heat

• The average kinetic energy of particles

Tags

PS.3.A

PS.3.D

Which of the following is an example of a physical change?

• Ice melting

• Hydrogen and oxygen reacting to form water

• Photosynthesis in plants

• Baking a cake

What is the law of conservation of energy?

• Energy can be created but not destroyed

• Energy can be destroyed but not created

• Energy can be changed from one form to another

• Energy remains constant during any physical or chemical change

What is the difference between endothermic and exothermic processes?

• Endothermic processes release energy, while exothermic processes absorb energy

• Endothermic processes absorb energy, while exothermic processes release energy

• Endothermic processes involve a change in temperature, while exothermic processes involve a change in pressure

• Endothermic processes involve a change in pressure, while exothermic processes involve a change in temperature

What is the transfer of energy between objects at different temperatures called?

• Heat

• Temperature

• Kinetic energy

• Specific heat

Which of the following is an example of an exothermic process?

• Melting ice

• Boiling water

• Baking a cake

• Photosynthesis in plants

What is the relationship between heat and temperature?

• Heat is a measure of how hot or cold something is, while temperature is the transfer of energy

• Heat and temperature are the same thing

• Heat is the transfer of energy, while temperature is a measure of how hot or cold something is

• Heat and temperature have no relationship

What is the freezing point of water on the Celsius scale?

• 0°C

• 32°C

• 100°C

• -273.15°C

What is the SI unit for temperature?

• Celsius

• Fahrenheit

• Kelvin

• Rankine

What is the correct conversion between Celsius and Kelvin?

• t(°C) = T(K) - 273.15 K, T(K) = t(°C) + 273.15°C

• t(°C) = T(K) + 273.15 K, T(K) = t(°C) - 273.15°C

• t(°C) = T(K) + 273.15 K, T(K) = t(°C) - 273.15°C

• t(°C) = T(K) - 273.15 K, T(K) = t(°C) - 273.15°C