Exothermic Reactions and Hot Ice Quiz

What is an exothermic reaction?

• A reaction that absorbs energy

• A reaction that releases energy

• A reaction that occurs at room temperature

• A reaction that requires no energy

Which of the following is NOT required for the experiment?

• A sealable container

• A pot

• A thermometer

• A measuring cup

Why should the solution be boiled over low heat?

• To speed up the reaction

• To make it more acidic

• To prevent it from evaporating

• To avoid changing its color

What indicates that the solution is done boiling?

• The solution starts bubbling

• The solution becomes thicker

• Crystals form on the surface

• The solution turns clear

What is the purpose of placing the solution in an ice bath?

• To initiate the reaction

• To dilute the solution

• To evaporate excess water

• To cool it down quickly

How can the hot ice reaction be started?

• By heating the solution

• By adding more vinegar

• By shaking the container

• By touching it with a spoon

What gas is released during the reaction between vinegar and baking soda?

• Carbon dioxide

• Oxygen

• Nitrogen

• Hydrogen

What compound is formed when sodium attaches to the vinegar molecule?

• Sodium hydroxide

• Sodium acetate

• Sodium bicarbonate

• Sodium chloride

What is a supercooled liquid?

• A liquid that is heated above its boiling point

• A liquid that remains liquid below its freezing point

• A liquid that evaporates quickly

• A liquid that solidifies at room temperature

What is the temperature reached during the exothermic reaction?

• 62°C

• 52°C

• 42°C

• 32°C