WorksheetsCHEM ROUND 2
Total questions: 12
Worksheet time: 4mins
During osmosis
Pure solvent diffuses through a membrane but solutes do not.
Pure solutes diffuse through a membrane but solvent does not.
Pure solvent and a solution both diffuse at the same time through a membrane.
Gases diffuse through a membrane into a solution and build up pressure.
EDTA is often used for which of the following:
Determine hardness of water
Measure the amount of zinc in a solution
A preservative in foods
All of the above
In electrolysis, what process always occurs at the anode?
ANSWER:
HYDROLYSIS
REDOX
REDUCTION
OXIDATION
Dry ice is the solid form of what gas?
nitrogen
oxygen
helium
carbon dioxide
What is the Vitamin name for Ascorbic acid?
VIT A
VIT B
VIT C
VIT D
What is the formula for quartz?
SiO
Si2o2
Si2O
SiO2
One source of Acid Rain is:
sulfur in fossil fuels
carbon in coal
hydrogen in hydrocarbons
chloroflorocarbons in aerosols
The chemical symbol for antimony is:
As
Sn
Sb
At
Brass is an alloy of what two elements?
COPPER AND SULPHUR
COPPER AND CHROMIUM
COPPER AND AlUMINIUM
COPPER AND ZINC
Moth balls contain:
formalin
chitin
formaldehyde
naphthalene
Presence of brick red flames indicates
strontium
copper
calcium
barium
Which separation technique is this?
boiling
vaporisation
distillation
condensation
