CC1 + 2 Recap

What is a pure substance?

• Something that cannot be separated by physical means

• Something that can be separated by physical means

• Something that has different properties throughout

• Something that does not have a constant chemical composition

What is the difference between a mixture and a compound?

• In a compound, different elements are joined chemically

• In a compound, different elements are joined physically

• In a mixture, different elements are joined chemically

How would you describe salty water?

• Mixture

• Compound

What separation method can you use to separate sand from salty water?

What separation method can you use to separate salt from salty water?

What is the scientific name for a mixture of a solute and a solvent?

What is the liquid in a solution called?

• Solution

• Solute

• Solvent

Sand and water are passed through a filter. How can we describe the substance that is left in the filter paper?

• Filtrate

• Residue

During crystallisation, one hazard is that the crystals that may spit while heating, true or false?

• True

• False

How would you describe the arrangement of particles in salt?

• Regular arrangement

• Irregular arrangement

• Random arrangement