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Irreversible Changes KS2 Worksheets



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Irreversible Changes

Find the answer that describes an irreversible change most correctly…

(a)

An irreversible change is a change which cannot be undone or reversed
(b)

An irreversible change is a change which can be undone or reversed
(c) An irreversible change is a change which forms new materials
(d) Both (a) and (c) are correct

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Irreversible Changes

Another name for irreversible changes is….

(a)

Physical Changes
(b) Chemical Changes
(c) Permanent Changes
(d)

Answers (b) and (c) are correct

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Irreversible Changes

An irreversible change….

(a)

only changes the physical appearance of a substance
(b) does not alter the way the substance is made
(c)

forms a completely different new material from the original material
(d) None of the above

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Irreversible Changes

Examples for irreversible changes are….

(a)

burning, rusting
(b) baking, melting
(c) mixing, freezing
(d) All of the above

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Irreversible Changes

Which element turns into rust

(a)

Gold
(b)

Iron
(c) Silver
(d) Both (b) and (c) are correct