Exothermic and Endothermic Reactions

The video tutorial explains the differences between exothermic and endothermic reactions. Exothermic reactions release energy, often in the form of heat or light, and are considered downhill reactions because the products have less energy than the reactants. Endothermic reactions absorb energy, making them uphill reactions, as the reactants have less energy than the products. An example of an endothermic reaction is an ice pack, which absorbs heat when activated. The video concludes with a reminder about the importance of kindness.

What is the main difference between exothermic and endothermic reactions?

• Both exothermic and endothermic reactions absorb heat.

• Exothermic reactions absorb heat, while endothermic reactions release heat.

• Both exothermic and endothermic reactions release heat.

• Exothermic reactions release heat, while endothermic reactions absorb heat.

What does the term 'exo' in exothermic mean?

• Exit

• Heat

• Energy

• Enter

In what forms can energy be released during an exothermic reaction?

• Only as light

• Only as heat

• As both heat and light

• As sound

How is energy represented in a chemical equation for an exothermic reaction?

• As a reactant

• As a product

• As a catalyst

• As a solvent

What does the term 'endo' in endothermic mean?

• Energy

• Heat

• To go in

• To go out

In an endothermic reaction, how is energy represented in the chemical equation?

• As a product

• As a reactant

• As a catalyst

• As a solvent

What happens to an ice pack when it is activated?

• It absorbs light and becomes dark.

• It releases heat and becomes warm.

• It releases light and becomes bright.

• It absorbs heat and becomes cold.

How can an endothermic reaction be described in terms of energy levels?

• As a circular reaction

• As a downhill reaction

• As an uphill reaction

• As a flat reaction