1. Separating Mixtures and Solutions

Front

What happens to a solution of salt and water when heated?

Back

The water will evaporate.

Front

How can sand and gravel be separated from each other?

Back

Using a sieve or screen.

Front

What is a sieve used for?

Back

A sieve is used to separate larger particles from smaller ones or to separate solids from liquids.

Front

Which materials are attracted to a magnet?

Back

Iron filings are attracted to a magnet.

Front

What type of paper allows liquid to pass through it?

Back

Filter paper allows liquid to pass through it.

Front

What is the definition of a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded.

Front

What is a solution?

Back

A solution is a homogeneous mixture where one substance (solute) is dissolved in another (solvent).

Front

What is the role of a filter in separating mixtures?

Back

A filter is used to separate solids from liquids by allowing the liquid to pass through while retaining the solid.

Front

What is the principle behind using a sieve?

Back

A sieve separates particles based on size, allowing smaller particles to pass through while retaining larger ones.

Front

What is evaporation?

Back

Evaporation is the process by which liquid turns into vapor, often due to heat.