Question 1
In which states do substances exist in our surroundings?
The substances exist in solid, liquid and gaseous form in our surroundings.
Which of these substances exists in liquid state at room temperature?
Mention four substance from your surroundings which
a) Shows the change of state in normal temperature.
b) Shows the change of state in high temperature.
Question 3 (e)
Fill up the blank. Changes in our surroundings that make us respond to them, are called .