Particle theory of matter

Define Matter
Matter is defined as anything that occupies space
What two groups can we class matter into?
Pure substances(constant composition) and Mixtures(variable composition)
What can pure substances be classed as?
Elements(cannot be seperated into simpler substances)
Compounds(2 or more elements chemically combined)
What can a mixture be classed as?
Homogenous(uniform throughout)
Heterogeneous(variable composition)
What is matter made up of?
Tiny particles called atoms and molecules
Are particles of matter in constant motion?
What are particles of matter held together by?
Very strong electrical forces
What are there between particles of matter?
Empty spaces
What is a physical change?
Only a change in form(the original substance exists as a different state)
What is a chamical change?
When a new substance is produced
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