MEDIUM
7th Andhra Pradesh Board
IMPORTANT
Earn 100

Ravi prepared carbon-dioxide using baking soda and vinegar. Carbon-dioxide changed lime water into milky white. Represent this experiment in a diagram with labelling. 

Important Questions on Changes Around Us

HARD
7th Andhra Pradesh Board
IMPORTANT
Science Class VII>Chapter 17 - Changes Around Us>Improve your learning:>Q 18)
When you burn a piece of wood different changes take place. Analyse the following. 
(a) Predict possible changes and list them all.
(b) Are there any physical changes among them?
(c) How many forms of energy are released in the change?
(d) What chemical changes do you notice? Explain briefly why these occur.