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Irreversible Changes KS2 Worksheets


Tick the box with the correct answer. Read the irreversible changes lesson.


[{ "ques": "Find the answer that describes an irreversible change most correctly.", "answers": [{ "opt": "An irreversible change is a change which cannot be undone or reversed", "selected": "false", "ans": "false" }, { "opt": "An irreversible change is a change which can be undone or reversed", "selected": "false", "ans": "false" }, { "opt": "An irreversible change is a change which forms new materials", "selected": "false", "ans": "false" }, { "opt": "Both (1) and (3) are correct", "selected": "false", "ans": "true" } ] }, { "ques": "Another name for irreversible changes is...", "answers": [{ "opt": "Physical Changes", "selected": "false", "ans": "false" }, { "opt": "Chemical Changes", "selected": "false", "ans": "false" }, { "opt": "Permanent Changes", "selected": "false", "ans": "false" }, { "opt": "Answers (2) and (3) are correct", "selected": "false", "ans": "true" } ] }, { "ques": "An irreversible change...", "answers": [{ "opt": "only changes the physical appearance of a substance", "selected": "false", "ans": "false" }, { "opt": "does not alter the way the substance is made", "selected": "false", "ans": "false" }, { "opt": "forms a completely different new material from the original material", "selected": "false", "ans": "true" }, { "opt": "None of the above", "selected": "false", "ans": "false" } ] }, { "ques": "Examples for irreversible changes are...", "answers": [{ "opt": "burning, rusting", "selected": "false", "ans": "true" }, { "opt": "baking, melting", "selected": "false", "ans": "false" }, { "opt": "mixing, freezing", "selected": "false", "ans": "false" }, { "opt": "All of the above", "selected": "false", "ans": "false" } ] }, { "ques": "Which element turns into rust?", "answers": [{ "opt": "Gold", "selected": "false", "ans": "false" }, { "opt": "Iron", "selected": "false", "ans": "true" }, { "opt": "Silver", "selected": "false", "ans": "false" }, { "opt": "Both (2) and (3) are correct", "selected": "false", "ans": "false" } ] } ]