What do you observe when :
(a) water is boiled
(b) a piece of paper is burnt
(c) some ice cubes are kept in a glass tumbler
(d) solid ammonium chloride is heated
(e) an iron nail is kept in tap water for few days.
(f)a spoon of sugar is heated in a pan
(g) a lighted match stick is brought near the mouth
of the test tube containing hydrogen gas.
(h)The quick lime is dissolved in water.
(i)little amount of curd is added to a bowl
containing warm milk and kept for five
hours.
Answers
Answer:
Hey mate here are ur answers..
1. When water is boiled then it changes to steam (at 100°)
2. The paper changes to ash
3. We observe some water droplets on the outer surface of tumbler
4. Aluminum chloride decomposes
5. We will observe rust on iron nail
6. Sugar sublimes and forms gas
7. We observe a pop sound as of burning hydrogen gas
8. When quick lime (Cao) is dissolved in water it changes to calcium hydroxide(Ca(OH) 2)
9. The lactobacillus bacteria stars dividing itself and change to curd.
PLS MARK ME THE BRAINLIEST IF U LIKE THE ANSWER...
Answer:
a) Amount of water decreases (Physical change)
b) Black Ash forms (Chemical change)
c) Ice melts (Physical change)
e) Rusting (Chemical change)
f) Sugar desolves in water (Physical change)
i) Amount of Curd increases as it is formed by milk (Chemical change)
Sorry to you as I don't know the answers for d, g and h part.
Hope rest of all answers are sufficient for you.