Water and Solutions

Front

What is produced when solid Sodium Hydroxide (NaOH) is dissolved in water?

Back

Negative hydroxide ions.

Front

Why does the freezing point of water lower when salt is added?

Back

More energy is needed to be removed from the water for it to freeze.

Front

What percentage of the Earth’s surface is covered by water?

Back

Approximately 71%.

Front

What are pure substances considered to be?

Back

Elements and compounds.

Front

What is the charge distribution in a water molecule?

Back

Hydrogen has a partial positive charge and oxygen has a partial negative charge.

Front

What is a solution?

Back

A homogeneous mixture of two or more substances.

Front

What is the difference between a solute and a solvent?

Back

A solute is the substance that is dissolved, while a solvent is the substance that does the dissolving.

Front

What is the process of dissolving?

Back

The process by which a solute interacts with a solvent to form a solution.

Front

What is an example of a heterogeneous mixture?

Back

Sand and salt mixture.

Front

What is the boiling point of water at sea level?

Back

100 degrees Celsius (212 degrees Fahrenheit).