6.3 Measuring Temperature Changes Quiz

Which of the following is a sign that a chemical reaction is taking place?

• A change in temperature

• A change in colour

• The formation of a gas

• All of the above

In some chemical reactions, energy is transferred to the surroundings as heat. What happens to the temperature of the surroundings in this case?

• It increases.

• It decreases.

• It stays the same.

• It fluctuates randomly.

In other chemical reactions, heat energy must be transferred to the reaction to make it happen. What happens to the temperature of the surroundings in this case?

• It increases.

• It decreases.

• It stays the same.

• It fluctuates randomly.

What is the name for a chemical reaction in which energy is transferred to the surroundings as heat?

• Endothermic reaction

• Exothermic reaction

• Neutralisation reaction

• Precipitation reaction

What is the name for a chemical reaction in which heat energy must be transferred from the surroundings to the reaction?

• Endothermic reaction

• Exothermic reaction

• Neutralisation reaction

• Precipitation reaction

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

• Burning wood

• Melting ice

• Dissolving ammonium nitrate in water

• Photosynthesis

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

• Burning wood

• Melting ice

• Dissolving calcium chloride in water

• Respiration

What is the name for the energy stored in an object due to its temperature?

• Kinetic energy

• Potential energy

• Chemical energy

• Thermal energy

What is the name for the process of describing what you would do differently in an experiment if you repeated it and explaining why you would do those things differently?

• Making a prediction

• Identifying variables

• Evaluating an investigation

• Drawing a conclusion

Which of the following is NOT a factor to consider when evaluating an investigation?

• Are there enough results to support the conclusion?

• Is the method suitable?

• Are all the variables controlled?

• Are the results consistent with the predictions?