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What is an element A substance made up of only one type of atom
How many types of elements are there? Over 100 types
What is the most common element in air? Nitrogen
Where all the known elements are named? The periodic table
All elements are given what to identify them? symbols
What is a molecule? Consists of two or more atoms chemically combined
Examples of molecules? H2O.....O2.....C02
What is a compound? Consists of two or more atoms chemically combined
example of a compound? Water-is made up with 2 elements, hydrogen and oxygen
What is a mixture? A mixture is a non definite amount of elements and compounds
Example of a mixture? Air is a mixture of gases.
Created by: Caitlin27600.