Chemistry Unit 5 Notes 3 Question Preview (ID: 62441)


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Covalent
a) Molecular Compounds
b) Cular compounds
c)
d)

Molecule
a) neutral group of atoms held together by covalent bonds
b) chemical compound whose simplest units are molecules
c)
d)

Molecular compound
a) neutral group of atoms held together by covalent bonds
b) chemical compound whose simplest units are molecules
c)
d)

Molecular Compounds usually form SPONCH which is?
a) Sulfur,Phosphorus,Oxygen,Nitrogen,Carbon,and Hydrogen
b) Small,pie,ox,night,card,higher
c)
d)

Covalent Bonds are much:
a) stronger than ionic bonds
b) weaker than ionic bonds
c)
d)

Chemical formula:
a) gives numbers of atoms of each kind in a chemical compound–uses symbols and subscripts.(H2O C6 H12O6)
b) chemical compound
c)
d)

The average distance between two bonded atoms at their lowest potential energy is called:
a) bond length
b) bond width
c) bond height
d)

In forming a covalent bond, the hydrogen atoms:
a) release energy(The same amount of energy must be added to separate the bonded atoms)
b) sfggwggregre
c)
d)

Bond energy is:
a) the energy required to break a chemical bond and form neutral isolated atoms
b) ssssssssssssfvwfvffvs
c)
d)

The stronger the bond, the shorter the:
a) bond length (distance) and the higher the bond energy value
b) An inverse proportion exist between bond energy and length.
c) All Correct
d)

A bond forms when:
a) atoms are a certain distance from each other(low energy state)
b) cdffew
c)
d)

If closer together or farther apart atoms:
a) will be in a unstable situation
b) srwrgr
c)
d)

The octet rule is a chemical rule of thumb that reflects the theory that: main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.
a) false
b) true
c)
d)

Ionic Bonds:
a) composed of positive ions (cations) and negative ions (anions) that combine so tpositive and negative charges are equal
b) Chemical Compound
c)
d)

The chemical formula of an ionic compound shows:
a) the ratio of the ions present in a sample of any size
b) gsfhrea
c)
d)

A formula unit is the:
a) smallest unit of atoms from which an ionic compound’s formula can be established
b) biggest unit of atoms from which an ionic compound’s formula can be established
c)
d)

Most ionic compounds exist as:
a) crystalline solids
b)
c)
d)

A crystal of any ionic compound is a:
a) three-dimensional network of positive and negative ions mutually attracted to each other
b) four-dimensional network of positive and negative ions mutually attracted to each other
c)
d)

Ionic compounds tend to form so that each atom:
a) gains or loses electrons from its highest occupied energy level to form an octet
b) loses electrons from its highest occupied energy level to form an octet
c)
d)

The simplest ratio of an Ionic compound’s ions is a
a) Formula unit....Not molecule
b) Ionic compounds organize in a characteristic crystal lattice of alternating positive negative ions.=True
c)
d)

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