Y8 - topic 2 - lesson 7: Endothermic & exothermic reactions

An ______________ reaction is one that involves a decrease in temperature as heat energy is absorbed.

An ______________ reaction is one that involves an increase in temperature as heat energy is released.

What type of reaction is being described: a reaction that involves a decrease in temperature as heat energy is absorbed.

• endothermic

• exothermic

What type of reaction is being described: a reaction that involves an increase in temperature as heat energy is released.

• endothermic

• exothermic

The temperature of the reactants is found to be 20^oC. After a chemical reactions taken place, the products are found to have a temperature of 50^oC. What type of reaction took place?

• endothermic

• exothermic

The temperature of the reactants is found to be 20^oC. After a chemical reactions taken place, the products are found to have a temperature of 10^oC. What type of reaction took place?

• endothermic

• exothermic

The temperature of the reactants is found to be 18^oC. After a chemical reactions taken place, the products are found to have a temperature of 6^oC. What type of reaction took place?

• endothermic

• exothermic

The temperature of the reactants is found to be 22^oC. After a chemical reactions taken place, the products are found to have a temperature of 27^oC. What type of reaction took place?

• endothermic

• exothermic