PhySci Midterms Reviewer

Heat always travel from hotter to less hot objects.

• True

• False

Which of the following is true about an endothermic reaction?

• Energy is released into the surroundings.

• Energy is transferred from the object to the surroundings.

• Reactants = products + energy

• Object is cooler than the surroundings.

Which of the following is an exothermic reaction?

• Instant cold pack

• cooking egg

• fireworks

• photosynthesis

Which of the following is an endothermic reaction?

• Dissolving of detergent in water

• Burning of candle wick

• melting of ice

• freezing of water

Which of the following is an exothermic reaction?

• Cellular respiration

• photosynthesis

• evaporation of water

• melting of snow

Which of the following is a renewable energy source?

• Fossil fuels

• Natural gas

• Biomass

• Batteries

Which of the following is not a type of fossil fuel?

• Petroleum

• Natural Gas

• Coal

• Biomass

Which of the following is not a renewable energy source?

• Wind power

• Hydropower

• Solar power

• Battery power

These are energy sources which are formed from remains of organisms that lived millions of years ago.

• Biomass

• Geothermal

• Fossil fuels

• Hydrothermal

This is an energy source which came from living things such as plant leaves and animal manure

• Natural gas

• Fossil fuel

• Biomass

• Geothermal