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Elementcompoundmixtu
elements compounds and mixtures
Question | Answer |
---|---|
what is an element | a substance that cannot be split up into simpler subtances by chemical means |
how many elements are know | about 100 |
what is a compound | a substance which is amde up of two or more different elements combined together chemically |
how many compounds are known | millions |
what is a mixture | consists of 2 or more different substnaces mingled with each other but not chemically combined |
wht are 5 differences between mixtures and compounds | amount of substances in the mixture can vary, mixtures contain two or more substances,mixtures have similar properties to the substances in the same mixture,substances in the mixture can e easily seperated,little energy chnges occur when a mixture is made |