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The periodic table

QuestionAnswer
What is an element? A substance made up of only one atom.
What is a molecule? Two or more atoms bonded together
What is a compound? A molecule made up of two or more atoms of different elements
What is the periodic table? A list of all the elements.
Vertical columns in the periodic table are called: Groups
Horizontal rows across the periodic table are called: Periods
What increases one by one across a period? The number of protons
What is similar about all the elements in a group? Their physical and chemical properties
Created by: Caoimhe Billings
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