Activity 7.1 Let us explore (Page 99) Is every speck of this fine chalk powder still composed of the same substance Class 8
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Activity 7.1 Let us explore (Page 99) Class 8
Activity 7.1 Let us explore (Page 99) Class 8
1. Is every speck of this fine chalk powder still composed of the same substance, or has it changed into something else on breaking or grinding? Class 8
Answer:
Yes, even after breaking or grinding, each speck of chalk powder remains same as the previous state because this is a physical change in which only the size of chalk changes, and no any new substance is formed.
2. Are the units of chalk obtained in this manner considered the smallest units of chalk? Class 8
Answer:
No, the obtained units of chalk in the process of grinding are not the smallest unit.