Question

8. State whether burning is a physical change or chemical change.
9. Give the hasic unit of sneed

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Answer 1

Answer:

1.chemical

2.speedm/s²

Answer 2

Answer:

8) Physical change

Explanation:

9) Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour.