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15 Cards in this Set
- Front
- Back
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Compounds |
Substances made of two or more elements combined in fixed proportions. |
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Ionic compunds |
Forms when a metal and a nonmetal transfer electrons. |
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Ionic charge |
Number of electrons lost or gained during ion formation. |
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Ion |
Atom becomes an ion when it gains or loses electrons and becomes charged. Charged atom. |
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Ionic bond |
Oppositely charged ions have a strong attraction for one another and bond together. |
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Binary ionic compound |
Contains only two elements, one metal and one nonmetal. |
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Multivalent ionic compounds |
Ionic compounds with several charges. Can form more than one compound with the same nonmetal. |
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Polyatomic ions |
Ions made up of more than one element. Only occurs with nonmetal and nonmetal. |
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Covalent/molecular bonding |
Occurs when two or more nonmetals share valence electrons to complete their valence shells. Electrons are shared in Pairs. |
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Molecule |
Consists of two or more atoms smallest unit of a covalent compound particle that has two or more atoms that are covalently bonded. |
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Properties of ionic compunds |
-Forms crystals large enough to see -Takes lots of energy to separate which resulting to high melting points -Hard and brittle Conduct electricity when dissolved in water. |
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Properties of covalent/molecular compounds |
-Forms crystals but has various shapes -Many are gas or liquid at room temperature -Attractive forces are relatively weak resulting in low melting and boiling points -Poor conductors of electricity when dissolved in water. |
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1.What is a chemical bond? 2.And what are the 2 types of chemical bonds |
1. A force that joins atoms together. 2. The two types of bonding are ionic and covalent. |
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What is the formation of ionic compounds? |
metal and a nonmetal transfer valence electrons |
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What is the formation of covalent molecular compounds? |
Nonmetals sharing valence electrons. |
