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17 Cards in this Set
- Front
- Back
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Atoms that gain electrons from other atoms during chemical changes form ions that have more ________ than _________.
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electrons
protons |
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When an atom _____ electrons, ______ is needed to overcome the attraction between the electrons and the protons in the atom's nucleus.
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loses
energy |
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A ___________ ________ is the force of attraction between the nuclei of atoms and the electrons shared by the atoms.
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convalent bond
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Ionic bonds form during ________ _______ when atoms pull electrons away from other atoms.
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chemical changes
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Energy needed to remove electrons from atoms of elements in Group 1 and 2 is so ____ that these elements react very easily and can be found only as ions in nature.
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low
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_____ are charged particles that form during chemical changes when one or more valence electrons transfer from one atom to another.
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Ions
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The simpliest molecules are called __________ __________, and consist of two atoms bonded together.
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diatomic molecules
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The force of attraction between oppositely charged ions is called an ________ _____.
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ionic bond
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The halogens are extremely ________ non metals becasue they release a large amount of energy.
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reactive
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The atoms taht lose electron form ions that have ______ electrons tahn protons.
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fewer
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A ___________ _________ is the force of attraction between a positively charged metal ion and the electrons in a metal.
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metallic bond
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Removing electrons from atoms of nonmetals requires a ______ amount of _______.
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large
energy |
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Convalent compounds consist of individual particles called _____________.
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molecules
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Charged ions form a ________ compound.
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neutral
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The ions that make up an ionic compound are bonded in a repeating three-dimensional pattern called ________ ________.
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crystal lattice
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Removing electrons fom atoms of metal requires a ______ amount of energy , so metal atoms lose electrons easily.
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small
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_______, nitrogen , and _______ are diatomic molecules.
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oxygen
halogens |
