year 9 Science Homework Week 2

An insoluble solid from a compound

An insoluble solid from a liquid

An soluble solid from a solution

An insoluble solid from a mixture

An insoluble solid from a solution

An soluble solid from a liquid

A liquid from a soluble solid

An insoluble solid from a solution

A liquid from a soluble sol

Dissolved substances from a compound

Dissolved substances from an element

Dissolved substances from a mixture

different coloured inks or dyes with different solvents

different coloured inks or dyes with different solubility

different coloured inks or dyes with the same solubility

different solubilities and so move at different levels through the paper

different solubilities and so move at different times through the paper

different solubilities and so move at different speeds through the paper

Paper

Solvent

Solute

R_f = (time taken for substance) / (time taken for solvent)

R_f= (distance travelled by solvent) / (distance travelled by substance)

R_f= (distance travelled by substance) / (distance travelled by solvent)

Rutherford

Thompson

Dalton

Positive protons

Neutral neutrons

Negative electrons

Positively-charged protons embedded in a sphere of negative charge

Negatively-charged electrons embedded in a sphere of positive charge

Negatively-charged neutrons embedded in a sphere of positive charge

All the alpha particles should have passed directly through the gold foil

All the alpha particles should have been deflected

All the alpha particles should have been reflected straight backwards

1

0

-1

+1

0

-1

+1

0

-1

8

16

24

5

11

6