Chemical Bonds
Ions and oxidation
Electrons
Calculations
Dot Diagrams
100
Which of the following is a covalently bonded molecule? a. Cl2 b. air c. Ne d. MgOa
What is Cl2 - chlorine gas
100
This is the oxidation number of nitrogen in NO-
What is +1?+
100
This happens to electrons in the formation of a polar covalent bond.
What is they are shared unequally
100
This is the formula mass of C2H2.
what is 26 grams/mole
100
How many dots are shown in the electron dot diagram for calcium, element number 20?
What is 2
200
Which term describe the units that make up substances formed by ionic bonding? a. ions b. molecules c. acids d. atoms
What are ions
200
Electron dot diagrams are used to represent _______.
What is valence electrons
200
This is the maximum number of electrons in the third energy level.
What is 18?
200
This is the formula mass of CuF2.
What is 101.5 g/mol? Bonus: What are the ions used to create this compound?
200
Sulfur, element 16, forms a negative ion. This is how you would write that electron dot diagram.
What is eight electrons around a -2 charged sulfur?
300
Which of the following compounds is unlikely to contain ionic bonds? a. NaF b. CO c. LiCl d. MgBr
What is CO - carbon dioxide
300
In the compound Pb(OH)4, this is the anion.
What is OH-?
300
How many electrons are present in the bonding of CH3NH2?
What is 14? Bonus points for the team that draws it first.
300
The empirical formula of a compound containing 52.11%C, 13.14% H, and 34.75% O.
What is C2H6O
300
Write the electron dot structure for Na3N.
Three sodium giving away their electron and becoming positive and one nitrogen gaining 3 electrons and becoming -3.
400
What type of bond connects the atoms in a molecule of nitrogen gas (N2)?
What is covalent
400
Out of the following compounds, this one does not contain a polyatomic ion: sodium hypochlorite, sodium chlorate, sodium chlorite, sodium chloride.
What is sodium chloride?
400
The different areas for an electron in an atom are called this (Think about Bohrs model)
What is an energy level
400
If the empirical formula is C2H6O and the known molecular mass is 138.o g, this would be the molecular formula.
What is C6H18O3
400
This is the purpose of a dot diagram.
What is it shows the elements symbol and how many valence electrons the element has.
500
This part of the atom is involved in bonding.
What is the valance shell electrons?
500
A _________ is the force that holds two atoms together.
What is a chemical bond
500
A helium atom has only two electrons. Why does helium behave as a noble gas?
Because it has two electrons in its outer shell. It only has one outer shell so it is considered full with two. Full shells are the most stable.
500
This needs to be done if your mole ratios do not equal a whole number.
Multiply by the same number until all mole ratios are whole numbers.
500
Draw the electron dot diagram of Ca3N2.
3 Ca giving away 2 electrons and 2 nitrogen each getting 3 producing Ca2+ and N3-
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