WorksheetsYear 6 Chemistry Quiz 1
Total questions: 46
Worksheet time: 29mins
When you mix chemicals together, they make new chemicals. This is called ____ ______
(a)
A ______ change can be undone and generally refers to a change of state.
Reversible
Irreversible
An _______ change cannot be undone because the change is permanent and generally creates a new substance.
Reversible
Irreversible
Reversible changes are also called
Physical changes
Chemical changes
Irreversible changes can also be called
Physical changes
Chemical changes
Fuels are _____ that are very good at burning.
Substances
Cars
What are the three things we need to start a fire?
(a)
Leaves in autumn undergo a chemical change.
TRUE
FALSE
Choose the answers that respond to a physical change.
Burning wood.
Chopping wood.
Melting ice.
Rotten bananas.
Mixing and dissolving are examples of reversible change.
TRUE
FALSE
Rusting is an irreversible change.
TRUE
FALSE
Melting of wax is
reversible change
irreversible change
Burning of candle wax is a ________change
Reversible change
Irreversible change
Burning of paper is a _______________ change
Reversible change
Irreversible change
Melting of butter is a _______________ change
Reversible change
Irreversible change
Melting of ice cream is a _______________ change
Reversible change
Irreversible change
Tearing paper to small pieces is a _______________ change
Reversible change
Irreversible change
Frying an egg to make an omelette is a _______________ change
Reversible change
Irreversible change
Which of these are irreversible change
Melting of candle wax
Folding of paper
setting of curd
Physical change are genrally
reversible change
irreversible change
Chemical changes...
Always form a new substance.
May change shape or size.
May absorb or release heat.
May change colour, produce odor, create sound, release gas or produce light.
Can often be undone.
Which of these are chemical changes?
rusting
burning a log
Melting ice cream
slicing a orange peel
What is a reversible change?
a change that cannot be reversed
a change that can be reversed
I don't know
a change where a new substance is formed
What are irreversible changes?
A change that cannot be reversed
A change that can be reversed
I don't know
A change in which no new substance are formed
What are physical changes?
I don't know
a change where no new substance are formed
a change where a new substance has formed
A new formation of gas
What are chemical changes
I don't know
a new formation of gas
a new formation of substance
No new formation of substance
Burning a log is a chemical change
true
false
Melting of a popsicle is a reversible change
true
false
Growth of animals and plants
chemcial change
physical change
I don't know
Reversible change
Chemical changes are always irreversible
true
false
Baking of cake
Physical change
Chemical change
Reversible
Irreversible
Boiling of water
Physical change
Chemical change
Reversible
Irreversible
Melting of wax
Physical change
Chemical change
Stretching of rubber band
Physical change
Chemical change
Irreversible
Reversible
