1.2/1.3

Question 1

What is the law of conservation of mass?

Answer 1

The total mass lf the products formed in a reaction is equal to the total mass of the reactants

Question 2

What are the techniques for seperating mixtures?

Answer 2

• filtration
• crystalisation
• Distillation
• chromatogrpahy

Question 3

What is crystalisation?

Answer 3

Getting pure salt: heat to evaportate water until the solution is at the point of crystalisation(when small crystals appear on the edge of the solution.

• extract crystals
• left of the saturated solution is left to evaporate at room temperature

(Sperates soluble from solvent)

Question 4

What is distillation do?

Answer 4

Allows you to collect the solvent(water).

Solution heated and boiled to evaporte solvent. Vapour enters a condenser after rising. This glass tube cools the vapour and condensed back into a liquid for collection. Any solids will remain at the start point

Question 5

What are the properties of mixtures?

Answer 5

• no fixed composition
• no chemical bonds
• elements and compounds are easier to sperate

Question 6

Soluble

Answer 6

Able to be dissolved

Question 7

Solvent

Answer 7

Able to dissolve other substances