Lesson 3

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ion

An atom or molecule bearing an electrical charge is called a(n) _____

positive

An ion is (positive/negative) if if the atom contains fewer electrons than protons

negative

An ion is (positive/negative) if the atom contain more electrons than protons

charged

Ions differ from atoms in that they are _____

nonmetals

_____ tend to gain electrons, thereby becoming anions.

metals

_____ tend to lose electrons, and therefore become cations.

anion

a(n) (cation/anion) is represented with a superscript minus on the right of the element symbol

cation

a(n) (cation/anion) is represented with a superscript plus on the right of the element symbol

cations

positively charged ions are called _____

false

true/false: a cation is always bigger than its atom

true

true/false: a cation is always smaller than its atom

true

true/false: an anion is always bigger than its atom

false

true/false: an anion is always smaller than its atom

ion

A(n) _____ has a different number of electrons than the element

isotope

A(n) _____ has a different number of neutrons than the element

noble gases

The _____ are the most stable (least reactive) elements on the periodic table, and therefore do not form ions

anions

negatively charged ions are called _____


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