Energy + Chemical Reactions

The energy required to start a chemical reaction is ___.

• endothermic

• exothermic

• activation

• released

Energy is _____ when new bonds form.

• absorbed

• released

• lost

• gained

Energy is ______ when bonds break.

• gained

• lost

• released

• absorbed

An _______ reaction is when more energy is released than is absorbed. This energy can be in the form of light, heat, electricity, etc.

• endothermic

• endergonic

• exothermic

• exergonic

In a _____ reaction, the products have more energy than the reactants.

• exergonic

• endergonic

In a _____ reaction, the reactants have more energy than the products.

• endergonic

• exergonic

Which of the following categories of reactions can be used to classify both physical and chemical changes? (Multiple Response-MR)

• endergonic

• endothermic

• exergonic

• exothermic

An _______ reaction is when more energy is absorbed than is released. This energy can be in the form of light, heat, electricity, etc.

• endothermic

• endergonic

• exothermic

• exergonic

An _______ reaction is when more thermal energy is absorbed than is released.

• endothermic

• endergonic

• exothermic

• exergonic

An _______ reaction is when more thermal energy is released than is absorbed.

• endothermic

• endergonic

• exothermic

• exergonic