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elements compounds and mixtures

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
Created by: rbowen2018