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Cards In This Set
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What is a formula?
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Shorthand for a compound
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What is a subscript?
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Tells the number of each kind of atom in a compound. ie. H2O has 2 hydrogen and 1 oxygen.
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How many Irons and oxygens are in the following:
3FEO2
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3 Fe and 2 O
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What is the ratio in H2SO4
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2 H, 1S, 4O
therefore the ratio is 2:1:4
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What type of bond is the force that holds atoms together?
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Chemical
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What type of bond is the force that holds atoms together?
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Chemical
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What is a chemical bond?
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A force of attraction that holds a pair of atoms together.
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In order to make the overall charge of an atom zero, there must be an equal number of negatively charged ___________.
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Electrons
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Which electrons determine whether or not an atom will form bonds?
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The electrons in the outermost energy level.
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An atom will not normally form a chemical bond if it has __________ valence electrons.
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8
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How do two atoms become ions?
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By gaining or losing electrons
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An atom that loses one or more electrons from its outermost energy level becomes a __________________.
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Positively charged ion
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Why do the elements in Groups 1 and 2 react so easily?
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Little energy is needed to remove electrons.
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The names of negative ions that form when atoms gain electrons have the ending __________________.
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Ide
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What is a compound?
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2 or more elements combine to make a new substance .
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