p1.2 knowlege gaps Flashcards
1
Q
how is mass conserved
A
particles cannot be created or destroyed
applies to melting freezing evaporating condensation and sublimation
2
Q
heating à system will…
A
change energy store and increases temperature
may produce a change in state
make cause à chemical reaction.
3
Q
chemical changes
A
atoms are joined together in a different way
irreversible
