Atom Test Revision

Elli Humphreys
Flashcards by Elli Humphreys, updated more than 1 year ago
Elli Humphreys
Created by Elli Humphreys about 5 years ago


year 9 Science Flashcards on Atom Test Revision, created by Elli Humphreys on 03/20/2016.

Resource summary

Question Answer
What is an element? An element is any substance that cannot be broken down into simpler substances.
What are rows? They are in the periodic table and are also called 'periods'. They are horizontal.
What are groups? A group is also a column in the periodic table and is vertical
What are valence electrons? Electrons in the outermost shell
What are atoms mostly made up of? empty space
Does an atom have a charge? no
How can you tell the amount of electrons an element has? By the row the element is in
What are molecule? A group of atoms bonded together
What is a bond A strong force of attraction holding atoms together in a molecule
What is a compound? A substance in which two or more different elements are chemically bonded
What is an isotope? Atoms of the same element that have the same number of protons but different number of neutrons
What is the mass number? The amount of protons and neutrons in an atom
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