Lecture 4.1b

Which of the following is NOT a form of energy derived from chemical reactions?

Which of the following is a source of electrical energy from chemical reactions?

Which form of energy is associated with motion?

Where does the energy from reactions come from?

• The breaking and forming of bonds between atoms

• The movement of electrons

• The change in temperature

• The presence of catalysts

What happens when chemical bonds are formed?

• Energy is absorbed

• Energy is released

• No energy change occurs

• Energy is converted to mass

What forms of energy can be released or absorbed during chemical reactions?

• Only heat

• Only light

• Only electrical

• Heat, light, or electrical

What is the measurement of the heat change in chemical reactions called?

• Thermometry

• Calorimetry

• Barometry

• Hygrometry

What can be observed from the temperature changes resulting from a chemical reaction?

• Pressure changes

• Volume changes

• Heat energy involved

• Color changes

What instrument is used to measure the heat changes in chemical reactions?

• Thermometer

• Barometer

• Calorimeter

• Hygrometer

What does the term "Exo" in "Exothermic Reactions" refer to?

• In

• Out

• Heat

• Energy