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Chapter 17

What is an element an element is made up of only one type of atom
elements are listed on the periodic table
who discovered that all the atoms in an element are the same Robert Boyle
what is a molecule two or more atoms chemically combined
is water an atom or a molecule a molecule
what is a compound two or more elements chemically combined
what is the formula for salt NaCl
what is the symbol for sodium Na
What is the symbol for chlorine Cl
what is a mixture two or more things mingled together but not chemically combined
when iron and sulphur are heated iron sulphide is formed
is seawater a mixture or a compound a mixture
if elements in a substance are in the same ratio always this substance is a compound
Created by: PDervin