C3-Quantitative Chemistry

Question 1

What law states that matter cannot be created or destroyed just rearranged?

Answer 1

Conservation of Mass

Question 2

When a metal forms a metal oxide why does the mass increase?

Answer 2

Atoms of oxygen from air added

Question 3

When a metal reacts with an acid why does the mass decrease?

Answer 3

Gas is produced and released

Question 4

What is defined as the sum of relative atomic mass of each atom in a substance?

Answer 4

Relative formula mass (Mr)

Question 5

What are the four state symbols and what do they stand for?

Answer 5

(s) solid
(l) liquid
(g) gas
(aq) aqueous

Question 6

What is the equation that links volume, concentration and mass?

Answer 6

Concentration = mass / volume

Question 7

What is the unit for concentration?

Answer 7

g/dm³

Question 8

How can you tell when a symbol equation is balanced?

Answer 8

There is equal amounts of atoms on each side of the equation.

Question 9

How do you convert cm3 to dm3?

Answer 9

÷ 1000

Question 10

If the amount of solute in a solution increases, what happens to the concentration?

Answer 10

Concentration increases