Topic 1 - Elements, Compounds, Mixtures Flashcards
what is an element?
a substance only containing one type of atom
what is a compound?
a substance made of two or more different elements chemically bonded together
is it easy to separate a compound?
no, it’s very difficult
are the properties of a compound similar to the original elements?
no, they are often totally different
what is a mixture?
a substance made of two or more different elements NOT chemically bonded
are the properties of a mixture similar to the original elements?
yes, the properties are a mixture of the properties of the elements
is a mixture a pure substance?
no
what is a pure substance?
a substance completely made up of a single element/compound
what is the main property of a pure substance that makes it different to a mixture?
they have specific boiling points, mixtures boil over a range of tempratures
