Ions
Ionic Bonds
Covalent Bonds
Chemical Bonds
Oxidation Numbers
100
Why do atoms give or take electrons? Why do they do that?
To have a full outer energy level.
100
Ionic bonds form between ______ & ______.
Metals and Nonmetals
100
Covalent Bonds form between ______ & ______.
Nonmetals & Nonmetals
100
What is the difference between ionic and covalent compounds as far as electrons are concerned?
Atoms in ionic compounds transfer electrons to each other, and in covalent compounds the atoms share electrons
100
What is the oxidation number for Calcium.
2+
200
Do metals tend to give away or take valence electrons?
Give away
200
What would be the Ionic Formula for Sodium and Sulfur?
Na2+ S2-
200
Draw the lewis dot structure of a covalent compounds that is composed of Oxygen & Flourine
F --- O --- F
200
When elements form bonds, it changes their __ properties.
physical and chemical
200
What is the oxidation number for Indium?
3+
300
Why does an ion of Magnesium (#12) have a 2+ charge?
Magnesium ions have two more protons than they do electrons.
300
What is the Ionic formula between Potassium and Nitrogen?
K3+N3-
300
How many bonds will there be between two Oxygen atoms?
2 bonds (see below)
300
What does it mean when a molecule is polar?
One end of the molecule is + and the other side is -.
300
What is the oxidation number for Radon?
Radon doesn't have an oxidation number.
400
What charge would an ion of Nitrogen (#7) have?
-3
400
What holds the atoms in ionic bonds together?
The ion's opposite charges.
Ex. Na+ and Cl-...the opposite charges make the ions "stick" together.
400
Which of the following may be classified as a binary compound?
NH4Cl
Mg(OH)2
H2SO4
NaCl
NaCl
400
What is the difference between carbon monoxide and carbon dioxide?
Carbon monoxide has only one oxygen atom. Carbon dioxide has two oxygen atoms.
400
What would be the oxidation number for Arsenic?
3-
500
Will Silicon (#14) form an ion? Why/Why not?
Yes. Silicon has 4 valence electrons; it can give or take 4 electrons.
500
True or False?
Chlorine (#17) can form an ionic bond with all group 1 elements.
False - Hydrogen is a nonmetal and will form a covalent bond with Chlorine
500
What holds the atoms in covalent bonds together?
The shared electrons are attached to BOTH nuclei
500
Ionic compounds are usually formed by ionic bonding between metals and nonmetals. Which of the following is not an ionic compound?
KI
MgCl2
NaBr
HCl
HCl
500
What is the oxidation number for Hydrogen?
1+