Solubility and Energy Change

Front

Define the term insoluble.

Back

Cannot dissolve in water.

Front

What is the solubility of BaSO4?

Back

Insoluble.

Front

What is the solubility of CaCO3?

Back

Insoluble.

Front

In an endothermic reaction, heat is ...

Back

taken in.

Front

If the temperature before a reaction is 25 °C and after is 18 °C, what can be concluded?

Back

Two of the answers are correct: The temperature changed and it is an endothermic reaction.

Front

What is solubility?

Back

The ability of a substance to dissolve in a solvent.

Front

What is an exothermic reaction?

Back

A reaction that releases heat.

Front

What is an endothermic reaction?

Back

A reaction that absorbs heat.

Front

Give an example of a soluble substance.

Back

Sodium chloride (NaCl) in water.

Front

Give an example of an insoluble substance.

Back

Barium sulfate (BaSO4).