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Chapter 5 - The Structure of Matter
2 - Ionic and Covalent Bonding Questions
32
Science
9th Grade
11/14/2010

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Term
Bonded atoms usually have a ______ electron configuration.
Definition
Stable
Term
Name the three types of bonds that join atoms.
Definition
Ionic bond
Metallic bond
Covalent bond
Term
Are bonds flexible or rigid?
Definition
Flexible like stiff springs
Term
In ionic bonds, atoms of _______elements form the positively charged ions.
Definition
Metal
Term
In ionic bonds, atoms of ______ elements form the negatively charged ions.
Definition
Non-metal
Term
Do Ionic Bonds share electrons or transfer electrons?
Definition
Transfer
Term
Are ionic compounds in the form of molecules or networks?
Definition
Networks
Term
What must be done to an ionic compound before it can conduct electricity?
Definition
Melt it or dissolve it in water
Term
Can solid ionic compounds conduct electricity?
Definition
No
Term
Can metallic compounds conduct electricity? Why or why not?
Definition
Yes, because electrons can move freely between atoms.
Term
What makes metals flexible?
Definition
The fact that their atoms can slide past each other without their bonds breaking.
Term
Compounds that are made of molecules like water and sugar have __________ bonds.
Definition
Covalent
Term
Most covalent compounds have relatively (low or high) melting points.
Definition
Low
Term
Do molecules in covalent compounds conduct electricity? Why or why not?
Definition
No, because they are not charged.
Term
Do Covalent Bonds share electrons or transfer electrons?
Definition
Share
Term
What do you call a bond in which electrons are shared equally such as with two chlorine atoms forming a chlorine molecule?
Definition
Nonpolar Covalent Bonds
Term
Covalent bonds form when atoms share pairs of ________ electrons.
Definition
Valence
Term
A single line drawn between two atoms shows that the atoms share how many electrons? Give an example of an element that joins using this bond.
Definition

Two

Chlorine

Term
A double line drawn between two atoms shows that the atoms share how many electrons? Give an example of an element that joins using this bond.
Definition
Four or two pairs
Oxygen
Term
A triple line drawn between two atoms shows that the atoms share how many electrons? Give an example of an element that joins using this bond.
Definition
Six or three pairs
Nitrogen
Term
Which is the strongest covalent bond, single, double, or triple?
Definition
Triple, then double, single is weakest
Term
Are triple and double bonds longer or shorter than single bonds?
Definition
Shorter
Term
_________bonds form when atoms share pairs of valence electrons.
Definition
Covalent
Term
(T or F) Atoms always share electrons equally.
Definition
False
Term
An unequal sharing of electrons forms what type of bond?
Definition
Polar Covalent Bond
Term
When atoms are the (same or different), the electrons are not shared equally, and create a Polar Covalent Bond. Give an example of a compound with such a bond.
Definition
Different
Ammonia Gas NH3
Term
Compounds which have both ionic and covalent bonds are made of what kind of ions?
Definition
Polyatomic ions
Term
Name 3 common Polyatomic compounds.
Definition
NaHCO3 Baking Soda
HCO3 Hydrogen carbonate
Na2CO3 Sodium carbonate
NaOH Sodium Hydroxide
NH4NO3 Ammonium Nitrate
NH42SO4 Ammonium Sulfate
Term
In Polyatomic compounds' chemical formulas, the parenthesis do what?
Definition
Group the atoms together to show the ratio of one atom to another. For example in (NA4)2 SO4 there are two ammonium ions NA4 to every one sulfate ion SO4.
Term
An -ate ending is used to name the ion with ____________________.
Definition
one more oxygen atom
Term
An -ite ending is used to name the ion with _____________________.
Definition
One less oxygen atom
Term
Name two polyatomic anions that don't follow the -ate, -ite naming rule.
Definition
Hydroxide and cyanide
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