Physical & Chemical Changes Test Review

Front

What is a solution?

Back

A solution is a homogeneous mixture where one substance (solute) is dissolved in another (solvent), such as salt in water.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded, such as sand and iron filings.

Front

How can you separate sand from iron filings?

Back

You can use a magnet to attract the iron filings away from the sand.

Front

What technique is best for separating soil from water?

Back

Filtration is the best technique to separate soil from water.

Front

What is magnet separation?

Back

Magnet separation is a method used to separate magnetic materials from non-magnetic materials using a magnet.

Front

Which substance will NOT dissolve in water: salt, sugar, pepper, or coffee?

Back

Pepper will NOT dissolve in water.

Front

What is decanting?

Back

Decanting is the process of carefully pouring liquid from one container to another, leaving solid sediment behind.

Front

What is distillation?

Back

Distillation is a separation technique that involves heating a liquid to create vapor and then cooling it to create a liquid, used to separate mixtures based on boiling points.

Front

What is filtration?

Back

Filtration is a process that separates solids from liquids using a filter, allowing the liquid to pass through while retaining the solid.

Front

What is chromatography?

Back

Chromatography is a technique used to separate mixtures based on the different rates at which components move through a medium.