Chemical Bonds

A bond that forms between atoms when they share electrons is a(n) ___________ cond

covalent

An atom that has gained or lost electrons is called?

ion

When cobalt chloride unites with water to form cobalt hexahydrate, it's formula is written, CoCl2 _____* 6H2O

False, you're adding, not multiplying.

A(n) ___________ is formed when atoms gain, lose, or share electrons.

chemical bond

A compound that is composed of only two elements is a(n)

dyatomic

A positive or negative number that is assigned to an element to show its combining ability in a compound is a(n)

oxidation number

A molecule that has a positive end and a negative end is a(n) ________ molecule

polar

Because each noble gas has an outer energy level that is completely filled with electrons these elements form chemical bonds easily.

false, these elements do not form chemical bonds easily

A(n) ________ tells what elements make up a compound and the ratios of the atoms of those elements

chemical formula

An element that loses electrons when bonding with other atoms have a negative oxidation number.

false, it has a positive oxidation number, not a negative.

A covalent bond is the force of attraction between the opposite charges of the ions in an ionic compound.

false, not covalent, it's ionic

A(n) __________ is a compound that has water chemically attached to its ions.

hydrate

The force of attraction between the opposite charges of the ions in an ionic compound is a(n) ___________

ionic bond

Molecules that do not have oppositely charged ends are ______ molecules

non-polar

A group of atoms with a positive or negative charge is a(n)

polyatomic ion

An atom is _________ when it's outer energy level is filled with electrons

stable

A chemical bond occurs when atoms lose, gain or share electrons.

true

Compounds containing polyatomic ions can have both ionic and covalent bonds

true

Compounds have properties unlike those of their elements.

true

In a chemical formula, a subscript tells us how many atoms of an element are in a unit of a compound.

true

Neutral particles formed as a result of a covalent bonding are called molecules.

true

When writing the formula of a compound, the symbol of the element with the positive oxidation number comes first.

true