PDF chapter test TRY NOW
1. How can a change occur in a substance?
A change can occur in a substance by an alteration in the .
2. Can you suggest a method to collect water from sea water?
The process is used to remove dissolved solids from a solid-liquid mixture. In salt pans, this is the method for extracting salt from seawater.
3. Is solar eclipse a periodic change? Give your reason.
, the solar eclipse is that occurs after a definite interval of time.
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