Read the situation give below and choose answer to the questions.
Grade 7 students were preparing for the annual Science Fair. After showing how sugar dissolves in water, Riya heated the mixture to recover the sugar. Arjun demonstrated how burning a candle's wick causes it to turn black and emit smoke.
Pritika blew air into a glass of lime water; the gas released turned the lime water milky. Karan, meanwhile, put a balloon over the mouth of a hot bottle and used warm air to inflate it. At last, Tanvi used a hammer to flatten a piece of aluminium foil after rolling it.
Pritika blew air into a glass of lime water; the gas released turned the lime water milky. Karan, meanwhile, put a balloon over the mouth of a hot bottle and used warm air to inflate it. At last, Tanvi used a hammer to flatten a piece of aluminium foil after rolling it.
1. Dissolving sugar in water is a physical change.
2. While blowing \(CO_2\) gas to lime water, what type of change occurs?