Reversible changes can be undone, returning to the original state, while irreversible changes result in new substances that cannot revert back. | Card: 2 / 20 |
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Riddle: I can change my state from solid to liquid and back again, but once I boil, I cannot return the same way. What am I? | Card: 11 / 20 |
Fill in the blank: When vinegar is mixed with bicarbonate of soda, it causes an ___ change. | Card: 19 / 20 |






