Pure substances such as compounds and elements.
"Physical means" that is to say: No heating!
A lot of compounds decompose by simple heating, like making charcoal by heating wooden chunks.
A compound consists of two or more elements chemically combined together and as such, compounds cannot be separated by physical change or means.
hydrogen is the simplest element there is. you cant break hydrogen down. it is only a proton and an electron(sometimes with a neutron).
that's an element! =]
gas because you cant break it
.....
isotopes
An atom
A pure substance.
a change in size, shape or the state of matter is a physical change. True for A+.
Yes, matter can change states after a physical change.
a physical change is the form of matter but not in its chemical identity or is when the state or shape of matter is changed.physical change is reversable or temporary while a chemical is permenent or cannot be reversed.a chemical change is a change in which one or more kinds of matter are transformed into a new kind of matter.
Matter can go through change of state. This is a physical change from gas>liquid>solid. So, matter can has a physical change.
substance
A pure substance.
a change in size, shape or the state of matter is a physical change. True for A+.
Yes, matter can change states after a physical change.
a physical change is the form of matter but not in its chemical identity or is when the state or shape of matter is changed.physical change is reversable or temporary while a chemical is permenent or cannot be reversed.a chemical change is a change in which one or more kinds of matter are transformed into a new kind of matter.
no physical change does not change matter
no physical change does not change matter
Matter can go through change of state. This is a physical change from gas>liquid>solid. So, matter can has a physical change.
it is a physical change. there is no change in matter
The matter is the same.The original matter can be recovered. The matter is different.The old matter is no longer present. The original matter cannot be recovered. by ss The matter is the same.The original matter can be recovered. The matter is different.The old matter is no longer present. The original matter cannot be recovered. by ss
A compound.
Matter is a pure substance if it can only be separated by chemical means, NOT physical means. This could be a compound or an element. The opposite is a mixture which can be separated/broken into smaller parts by physical means.