I believe that it is a chemical change.
Answer:
3000J
Explanation:
Formula: Work = Force × Distance
Solution: Work = 200N × 15m
Answer = 3000N/m or 3000J
Answer:
4 Fe + 6 02 ----> 2 Fe2O3
Explanation:
you need 4 iron and 6 oxygen in each side
Answer:
carbon is non reactive
Explanation:
it doesn't react readily with other elements
due to its 4 valence electrons