Question

1) ____________ expands when frozen 2) Why do substances expand on heating?

Answer 1

1)Water expands when frozen.

2)Answer is given in above picture

Hope it helps!!! ;)

Answer 2

Hello friend

Here is your answer

1) Water expands when frozen.

2) Heating a substance is the same as increasing it's thermal energy. This increase in energy increases molecular movement, so the substance expands to accommodate these vibration.  

Hope it helped you

lf it did help you even 1%, please mark this answer as the brainliest answer and follow me✨