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S8P1.b
describe the difference between pure substances (elements and compounds )and mix
Term | Definition |
---|---|
Pure Substance | a sample of matter ,either a single element or a single compound that has definite chemical and physical properties |
Compound | a substance made up of atoms of two or more different elements joined by chemical bonds |
Molecule | the smallest unit of substance that keeps all of the physical and chemical properties of that substance |
Chemical Formula | a combination of chemical symbios and numbers to represent a substance |
Subscript | a small number written to the right and slightly below a chemical symbol to tell the number of atoms of that element in the substance |
Mixture | a combination of two or more susbstances that are not chemical combined |