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WorksheetsClassroom Chemistry
Total questions: 25
Worksheet time: 6hrs 15mins
Name
Class
Date
1.
What kind of change is occurring when the candle is melting ?
a)
Chemical
b)
Physical
2.
What kind of change is occurring when baking cookies ?
a)
chemical
b)
physical
3.
What kind of change is occurring to the water ?
a)
chemical
b)
physical
4.
What kind of change is occurring to the car ?
a)
chemical
b)
physical
5.
What would be the best technique to separate a mixture of beans and rice?
a)
sieves (various sizes)
b)
distilling / Using water
c)
magnet
d)
evaporation
6.
Any solid that can dissolve in water is ______?
a)
saturated
b)
insoluble
c)
soluble
d)
suspension
7.
Which method would be the best to use in order to separate aquarium rocks and sawdust?
a)
sieves
b)
magnets
c)
distilling / water
d)
evaporation
8.
A lifesaver dissolved in a solution is called the _________.
a)
solute
b)
substance
c)
mixture
d)
soluble
9.
When you can no longer dissolve any more sugar into water the the solution is now _________.
a)
solvent
b)
soluble
c)
insoluble
d)
solvent
10.
Salad is an example of a ____.
a)
solution
b)
mixture
c)
substance
d)
solute
11.
Which method would be the best to use in order to separate sugar from lemon juice and water?
a)
sieves
b)
magnets
c)
distilling / water
d)
evaporation.
12.
A chocolate milkshake is an example of a _______.
a)
solution
b)
mixture
c)
substance
d)
liquid
13.
The film that forms on the top of a liquid is caused by _____.
a)
molecules
b)
interaction
c)
surface tension
d)
cohesion
14.
The slime or film that forms on top of liquid is called _______.
a)
molecules
b)
interaction
c)
surface tension
d)
cohesion
15.
A colourless gas having the chemical symbol CO2 is called _____.
a)
oxygen
oxygen
oxygen
b)
carbon
c)
hydrogen
d)
carbon dioxide
16.
Which of the following will not produce a chemical reaction?
a)
water and yeast
b)
cornstarch and water
c)
baking powder and vinegar
d)
baking soda and vinegar
17.
A chemical or liquid that feels slippery, is bitter, turns litmus paper blue and has a pH value greater than 7 is called ______.
a)
a base
b)
an acid
c)
an acid - base
d)
neutral
18.
A chemical or liquid that is bitter, turns litmus paper red and has a pH value less than 7 is called ______.
a)
a base
b)
an acid
c)
an acid-base
d)
neutral
19.
Which of the following is an example of an irreversible change?
a)
melting ice cubes
b)
making carbon dioxide
c)
making salad
d)
mixing sand and iron filings
20.
Which of the following is an example of a reversible change?
a)
burnt log
b)
salt crystal
c)
a cake
d)
plastic
21.
Which of the following is an example of an acid?
a)
baking soda
b)
water
c)
lemons
d)
tea
22.
Which of the following is an example of a base?
a)
baking soda
b)
citric
c)
lemons
d)
orange juice
23.
Which of the following substances will not dissolve in water?
a)
sugar
b)
salt
c)
baking soda
d)
flour
24.
Which of the following is an example of a state of matter that has no definite volume and no definite shape?
a)
rock
b)
oxygen
c)
milk
d)
water
25.
The study of matter, it properties, composition and changes is called
a)
evaporation
b)
interaction
c)
science
d)
chemistry
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