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, requiring heat from the surroundings, and are seen as uphill reactions since the products have more energy than the reactants. Examples include photosynthesis and ice packs. The video concludes with a reminder about the importance of kindness.

What is the main difference between exothermic and endothermic reactions?

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

• Both exothermic and endothermic reactions absorb heat.

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

• Both exothermic and endothermic reactions release heat.

What does the term 'exo' in exothermic mean?

• Energy

• Enter

• Heat

• Exit

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

• Only as heat

• As both heat and light

• As sound

• Only as light

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

• As a product

• As a reactant

• As a catalyst

• As a solvent

What does the term 'endo' in endothermic mean?

• Heat

• Energy

• To go in

• To go out

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

• As a catalyst

• As a solvent

• As a product

• As a reactant

What happens to an ice pack when it is activated?

• It releases heat and becomes warm.

• It absorbs heat and becomes cold.

• It releases light and becomes bright.

• It absorbs light and becomes dark.

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

• As a flat reaction

• As a downhill reaction

• As a circular reaction

• As an uphill reaction