C1

Question 1

How do you work out the relative formula mass of an isotope?

Answer 1

(Percentagemass of isotope a) + (Percentagemass of isotope b) / 100

Question 2

What is the radius of an atom?

Answer 2

1x10^-10/0.1nm

Question 3

What was the Alpha Scattering experiment?

Answer 3

Conducted by Ernest Rutherford, involved gold foil and alpha particles. Let to the discovery of the nucleus and the creation of the 1st nuclear model.

Question 4

What was Dalton’s model?

Answer 4

Dalton’s model: All stuff is made of tiny atoms that can’t be broken. Different atoms have different sizes and weights. When they team up to make compounds, they do it in simple ratios.

Question 5

What was the plum pudding model?

Answer 5

J.J. Thompson’s model. The plum pudding model says atoms are like a ball of positive charge with negative electrons scattered inside, like plums in a pudding.

Question 6

what does filtration involve?

Answer 6

Insoluble solids and a liquid.

Question 7

What does crystalization involve?

Answer 7

Soluble solid from a solution

Question 8

What does distillation involve?

Answer 8

Solvents from a solution

Question 9

What does fractional distillation involve?

Answer 9

two liquids with similar boiling points

Question 10

What does Chromatography involve?

Answer 10

identify substances from a mixture in solution