Unit 5 Chemical Bonding Study Guide
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Each family in the periodic table has its own characteristic properties based upon its number of
__________________________________________.
The valence electrons are those electrons ___________________ from the nucleus.
In an electron dot diagram of carbon, ________ dots should be drawn around the element’s symbol.
Each dot in an electron dot diagram stands for _____________________________.
Atoms are stable when the have _________________________________________.
Atoms that are not stable form a _______________________________ with other atoms to become more
stable.
Atoms can lose, _________________ or _____________________ electrons to form a chemical bond.
The attraction between a positive ion and a negative ion results in an _________________ bond.
A __________________ bond is formed when two atoms share electrons equally.
When an atom has an electric charge it is called an _______________.
Electrons involved in bonding between atoms are ____________________ electrons.
What is the greatest number of valence electrons an atom can have? ________ (with the exception of
____________)
When an atom gains an electron, it becomes a ______________________ ion.
If atoms of a halogen nonmetal (group 17) gain one electron, it will have a _____________ charge.
When an atom loses an electron, it becomes a _______________________ ion.
If an atom of lithium (Li) loses an electron it will have a _____________ charge.
Ionic compounds are electrically _____________________________.
If I have 3 magnesium atoms each with a 2+ charge, I must have an equal amount of negatively charged ions
to balance out the positive charges, so how many nitrogen atoms would I have in in the ionic compound
Magnesium Nitride (Mg3N?)._________
Aluminum Chloride is an ionic compound with the chemical formula AlCl3. The subscript “3” indicates there
are three ________________________.
In the chemical formula for an ionic compound, the ________________________ ion is written first.
What is the chemical name for the compound with the formula Na2S? ______________________________
In general, ionic compounds are hard, ___________________________, with
____________________________, that _________________________________________ when dissolved
in ___________________________.
A _________________________ is formed when 2 pairs of electrons are shared.
Ionic bonds are formed between __________________ and nonmetals.
When electrons are _________________________ between two atoms, a covalent bond is formed.
Covalent bonds are formed between ________________________________.
The number covalent bonds that a nonmetal atom can form equals the number electrons needed to make a
total of __________.
A molecule is _________________________________________________.
Molecular (covalent) compounds do not ______________________________________ and have lower
_________________________ and ______________________ points.
Molecular compound have lower melting and boiling points because they are held together by a
______________ bond compared to ions in ionic compounds.
Molecular compounds do not conduct electricity because they do not
______________________________________________________________________.
A covalent bond in which electrons are shared equally is called a ______________________________.
An example of a covalent compound that has a _________________ bond is water.
The attraction between a positive metal ion and the electrons surrounding it is a _______________bond.
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Properties of a metallic bond include malleability, _________________, _________________,
________________________, and high ___________________________ of solid metals.
The properties of metallic bonds relate to the __________________________________.
Complete the table.
Type of Bond
How bond forms
Ionic Bond
Polar Covalent Bond
Charge on bonded
atoms
Yes; positive and
negative
Example
Unequal sharing of
electrons
Nonpolar Covalent Bond
No
Metallic Bond
38.
Draw electron dot diagrams
K
O
Mg
Al