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S8P1.b
describe the differencebetween puresubstances(elements and compounds)and mixture
Term | Definition |
---|---|
pure substance | a sample of matter either a a single element or a single compound that has definite chemical and pro physical |
compound | a substance made up to atoms of two or more different joined by chemical bonds |
molecule | the smallest unit of substance that keps all of the physical and chemical properties of that substance |
chemical formula | a combination of chemical symbols and numbers to represent a substance |
subscript | a sma;; number written to the right and slighty below a chemical symbol to tell the number of the th |
mixture | a combination of two or more substances that are not chemically combined |