Exothermic and Endothermic Reactions

What is a characteristic of an exothermic reaction?

• Energy is given off to the surroundings.

• Energy is absorbed from the surroundings.

• Energy levels remain constant.

• Energy is converted into mass.

What is a characteristic of an endothermic reaction?

• Energy is given off to the surroundings.

• Energy is absorbed from the surroundings.

• Energy levels remain constant.

• Energy is converted into mass.

What does the prefix 'exo-' in exothermic signify?

• External, meaning giving out.

• Internal, meaning taking in.

• Equal, meaning no change.

• Excess, meaning too much.

What does the prefix 'endo-' in endothermic signify?

• External, meaning giving out.

• Internal, meaning taking in.

• Equal, meaning no change.

• Excess, meaning too much.

How do exothermic reactions typically affect the temperature of their surroundings?

• The surroundings heat up.

• The surroundings cool down.

• The surroundings remain at the same temperature.

• The surroundings change color.

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

• Electrolysis

• Photosynthesis

• Melting

• Respiration

How can an exothermic reaction be detected using a thermometer?

• By observing a color change.

• By measuring a decrease in volume.

• By measuring an increase in temperature.

• By detecting a change in pressure.

Which physical process is considered exothermic?

• Freezing

• Melting

• Boiling

• Evaporation

In an exothermic reaction, how do the energy levels of the products compare to the reactants?

• The energy of the products is lower than the energy of the reactants.

• The energy of the products is higher than the energy of the reactants.

• The energy of the products is equal to the energy of the reactants.

• Energy is only absorbed, not released.

How do endothermic reactions typically affect the temperature of their surroundings?

• The surroundings heat up.

• The surroundings cool down.

• The surroundings remain at the same temperature.

• The surroundings become more acidic.