4.5B Mixtures and Solutions

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that can be separated by physical means.

Front

What is a solution?

Back

A solution is a mixture where two or more substances combine evenly by dissolving.

Front

How can you separate a mixture of sand and pebbles?

Back

You can use a sieve to separate sand and pebbles.

Front

What happens to the properties of substances in a mixture?

Back

The substances in a mixture keep their individual properties.

Front

What is the best tool to separate iron filings from pepper?

Back

A magnet is the best tool to separate iron filings from pepper.

Front

How can you separate sugar from water after it has dissolved?

Back

You can separate sugar from water by evaporation.

Front

Can rocks and sand form a solution?

Back

No, rocks and sand do not form a solution; they keep their physical properties.

Front

What is the best way to separate a mixture of wet sand and pebbles?

Back

The best way is to use a sieve.

Front

What is the difference between a mixture and a solution?

Back

A mixture can be separated physically, while a solution is a mixture that has dissolved evenly.

Front

What does it mean to dissolve?

Back

To dissolve means to mix a substance evenly into a liquid so that it becomes part of the liquid.