Which pairs of words correctly completes the statement? Ionic compounds form when____ and _____ react.
metals ; nonmetals
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What does a chemical formula show?
the number and type of each atom in a compound
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In the formation of the compound of sodium chloride
a sodium atom donates an electron to a chlorine atom
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What is the chemical formula for calcium oxide?
CaO
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What is the overall charge of the compound sodium chloride?
0
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What is the formula for the compound sulfur hexachloride?
SCl6
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What is an ionic bond?
A bond that forms when electrons are transferred from one atom to another
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Predict the product from a reaction between lithium and oxygen.
Li2O
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What is the formula for the compound formed when aluminum ions(Al 3+) and chloride ions (Cl -) unite?
AlCl3
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Covalent compounds are formed when atoms
share valence electrons
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Unknown element W has 2 valence electrons. Unknown element X has 7 valence electrons. Which formula shows the most likely outcome when elements W and X react?
WX2
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Hector claims that a single sodium ion and a single oxygen ion do not bond together to form a stable binary ionic compound. Is he correct?
Hector is correct. The sum of the charges of the two ions must be zero in order for them to form a stable ionic compound.
