Question

classify the following changes as physical or chemical changes:
charring of sugar
sublimation of ammonium chloride
burning of butter
mixing oil with water
digestion of food

Answer 1

Answer:

here

Explanation:

1-C

2-C

3-P

4-P

5-C

Answer 2

Explanation:

) Evaporation of petrol is a physical change as no new product is formed only physical state changes.

b) Burning of Liquefaction of petroleum gas is a chemical change as new products are formed.

c) Heating iron rod to red hot is a physical change as no new product is formed; only temporary change (increase in temperature) occurs.

d) Curdling of milk is a chemical change as a new product in the form of curd is formed whose chemical composition is different from milk.

e) Sublimation of ammonium chloride is a physical process in which solid-state changes to gaseous one.