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17 Cards in this Set

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