Chemistry - Mixture & Compounds

Which of these mixtures could easily be separated using a magnet?

• Water and sand

• Sand and salt

• Iron and sand

• Salt and water

Which two of these mixtures could easily be separated using a filter?

• Coffee grinds and coffee

• Salt and water

• Sand and salt

• Sand and water

• Oil and water

What is evaporation (or crystallisation) usually used for?

• To get clean water from dirty water

• To separate a soluble solid (like salt or minerals) from water

• To separate hydrogen from water

• To separate an insoluble solid (like sand) from water

The amount of substance can vary

• Mixture

• Compound

Each substance keeps itws own properties

• Mixture

• Compound

The different substances are not chemically joined together

• Mixture

• Compound

Each substance is easily separated by physical means

• Mixture

• Compound

The amount of each element must be equal to form the compound

• Mixture

• Compound

It has properties different from the elements it contains.

• Mixture

• Compound

The elements are chemically joined together.

• Mixture

• Compound