CHEMISTRY MID-ROTATION TEST

Question 1

Safe practice in the lab includes

Answer 1

Not eating/drinking
Not running
Listening to instructions
Wearing safety glasses
Standing during experiments

Question 2

Hazard symbols can be recognised for

Answer 2

oxidising agents
corrosive
toxic
harmful
flammable

Question 3

I can recognise and draw apparatus such as

Answer 3

beakers, conical flasks, pipettes, measuring cylinders, filter funnels

Question 4

I know what different flame colours represent and the position of the collar needed to achieve these colours

Answer 4

fully closed - orange safety flame
Slightly open - quiet blue flame
full open - roaring blue flame

Question 5

I know the hottest part of the bunsen flame is

Answer 5

the inner blue cone

Question 6

I know the states of matter are

Answer 6

solid, liquid and gas

Question 7

I know that matter

Answer 7

is made up of atoms and can take different forms

Question 8

I can describe the states of matter in terms of shape and volume

Answer 8

solid - fixed volume and fixed shape
liquid - fixed volume but no fixed shape
gas - no fixed volume and no fixed shape

Question 9

I can describe/draw the arrangement of atoms in the 3 states of matter

Answer 9

solid - the atoms are tightly packed and arranged in rows
liquid - similar to solid, but some spaces
gas - atoms moving quickly in random directions and very spaced apart

Question 10

I know the changes of state

Answer 10

solid to liquid - melting
liquid to gas - evaporating
gas to liquid - condensing
liquid to solid - freezing
solid to gas - subliming

Question 11

I know that substances have different melting and boiling points

Answer 11

e.g. water boils at 100C whereas ethanol boils at 78C

Question 12

I know that liquids can evaporate

Answer 12

At different temperatures between their melting and boiling point, but the boiling point is the quickest temperature that liquids evaporate at

Question 13

I know that compression means

Answer 13

to squeeze things into a smaller volume

Question 14

I know that compression only affects

Answer 14

gases

Question 15

Compression doesn’t affect solids and liquids because

Answer 15

There is no space between the atoms for them to move closer to each other

Question 16

Diffusion is when

Answer 16

substances mix through each other

Question 17

Miscible is when

Answer 17

liquids mix through each other

Question 18

When miscible liquids mix, their volume

Answer 18

decreases