There are 3 types of substances
One of the type of substances are curry
The reverse of evaporation is melting
Tick all the factors that determines that there was a chemical change.
Seeing a permanent change in colour
Seeing a new solid form out of a new solution
Smelling gas or seeing bubbles.
Seeing light or feeling a change in temperature
Makes weird sounds.
In a physical change a new substance is not produced.
In a chemical change a substance is produced
Which of these arent example of chemical changes?
boiling water
Rusting
Sweating
Breaking
Which of these are not stated in the particle theory.
Indivisible
Invisible
They are ever moving
They have feelings
Attracted to each other
Freezing is the opposite of condensating
