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#9 Endothermic and Exothermic Processes

Last updated over 4 years ago

14 questions

Directions: Watch the following review video to refresh your memory on both systems and endothermic/exothermic processes. 

For the following questions choose whether or not the desription goes with endothermic reactions (A) or exothermic reactions (B).

1

More energy is released by products than is needed to break bonds.

1

It literally means "taking in heat."

1

Reactions feel hot to us.

1

An example is baking soda and vinegar.

1

Reaction feels cold.

1

Wood burning is an example.

1

Products have more energy than the reactants.

1

Heat is absorbed.

1

This equation: Reactants→Products+Energy

1

Sodium metal is dropped into water, and creates an explosive reaction. The reaction creates a lot of heat and flame.
Identify if this reaction is an endothermic or exothermic process.

1

When bread is baked, heat is required for the dough to rise and cook.
Identify whether baking bread is an endothermic or exothermic process.

1

Gaseous water becomes liquid in the air and forms a cloud.
Identify whether the system of the air is endothermic or exothermic?

1

Potassium chloride is dissolved in water in a conical flask. The reaction makes the glass feel cold.
Identify if this reaction is an endothermic or exothermic process.

1

Water is warmed up to its boiling point, where it starts to create gaseous water vapour.
Identify whether this state change is an endothermic or exothermic process.