Atom, molecule, element, compound, mixture Flashcards
1
Q
what is an atom?
A
the smallest part of an element that retains all properties of that element
2
Q
what is a molecule?
A
a small number of atoms bonded together
3
Q
what is an element?
A
a substance made up of only one type of atom, which cannot be split into simpler substances by chemical means e.g. heat and electricity
4
Q
what is a compound?
A
two or more elements chemically joined in fixed proportions
5
Q
what is a mixture?
A
two or more substances not chemically joined and not fixed in proportions e.g. air
