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WorksheetsChapter 4.2 Matter and its Changes
Total questions: 11
Worksheet time: 6mins
Which is a physical change?
burning wood
melting ice
rusting iron
spoiling food
Which characteristic is a chemical property?
highly flammable
mass of 15 kg
woolly texture
golden color
Which is a physical change?
burning natural gas
chopping onions
digesting food
exploding dynamite
Which is a chemical change?
boiling water
copper turning green in air
freezing fruit juice
slicing a potato
Which would be most useful for identifying an
unknown liquid?
density
mass
volume
weight
What causes a chemical reaction when you
prepare scrambled eggs?
removing the eggs from the shells
mixing the egg yolks and the egg whites
heating the eggs in a pan
sprinkling pepper onto the cooked eggs
Which describes the formation of a precipitate?
A gas forms when a solid is placed in a
liquid.
A liquid forms when a block of metal is
heated.
A solid forms when one liquid is poured
into another.
Bubbles form when an acid is poured
onto a rock.
Which diagram shows a chemical change?
Which is NOT true about firewood that burns
completely?
Ashes and gases form from the substances in the wood.
Oxygen from the air combines with substances in the wood.
The total mass of substances in this process decreases.
The wood gives off thermal energy and light.
Which is true when an ice cube melts?
Volume and mass increase.
Volume and mass do not change.
Volume decreases, but mass does not
change.
Volume increases, but mass decreases.
Which is a sign of a physical change?
Bread gets mouldy with age.
Ice forms on a puddle in winter.
The metal on a car starts to rust.
Yeast causes bread dough to rise.
