Mixtures and Solutions

Front

What is a mixture?

Back

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

Front

What is a solution?

Back

A type of mixture where one substance is dissolved in another, resulting in a homogeneous mixture.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Give an example of a physical change.

Back

Getting a haircut.

Front

What tool is used to measure mass?

Back

A balance.

Front

What is the purpose of a magnet in separation methods?

Back

To attract and remove magnetic materials from a mixture.

Front

How can you separate a mixture of sand and iron filings?

Back

By using a magnet to attract the iron filings.

Front

What does density measure?

Back

The mass of a substance per unit volume.

Front

How do you determine the order of liquids based on density?

Back

By comparing their masses and volumes; the liquid with the highest density will sink, while the least dense will float.

Front

What is the difference between a homogeneous and heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has a non-uniform composition.