C2 hwk due 26/5/23

Question 1

what does filtration separate

Answer 1

an insoluble solid from a solution

Question 2

what does simple distillation separate

Answer 2

liquids with different boiling points

Question 3

what does fractional distillation separate

Answer 3

liquids with similar boiling points

Question 4

what does crystallisation separate

Answer 4

a soluble solid from a liquid

Question 5

what does paper chromatography separate

Answer 5

mixtures of coloured compounds

Question 6

what is a pure substance

Answer 6

a substance containing only one type of atom or compound

Question 7

describe the mobile and stationary phase in paper chromatography

Answer 7

mobile - solvent
stationary - paper

Question 8

how are elements arranged in the periodic table

Answer 8

in order of their atomic number

Question 9

what does the group number tell you about an element

Answer 9

the number of electrons in the outer shell

Question 10

give four physical properties of a metal

Answer 10

high melting point
good conductor of electricity / heat
malleable
shiny