classify the following as chemical change or physical change
class 9
Answers
Answer:
If the chemical composition is changing then it is a chemical change and if the chemical composition is remaining the same, then it is not a chemical change.
(a) Cutting of trees – Physical change
(b) Melting of butter in a pan – Physical change
(c) Rusting of almirah – Chemical change
(d) Boiling of water to form steam – Physical change
(e) Passing of electric current through water and the water breaking down into hydrogen and oxygen gases – Chemical change
(f) Dissolving common salt in water – Physical change
(g) Making a fruit salad with raw fruits – Physical change
(h) Burning of paper and wood – Chemical change
Explanation:
Answer:
•physical
•physical
•chemical
•physical
•chemical
•physical
•physical
•chemical
Explanation:matter of reversible and irreversible and if new substance is formed or not.