Vocab
Accuracy
How close the calculated average value is to the true value.
What is the formula for hexacarbon nonahydride?
C6H9
What is the name for FeCl2?
iron (II) chloride
Does the following compound violate the zero charge rule? If so, calculate the net charge: InCl2? (Show your work)
Yes, it violates the zero charge rule.
In3+ x 1 = +3
Cl1- x 2 = -2
Net charge = 3 + (-2) = 1+
Give three properties of covalent bonds:
share electrons, does not conduct electricity in a solution, neutral nonmetal + neutral nonmetal, low melting points, low boiling points
Precision
How close each measurement is to one another.
What is the formula for dihydrogen pentoxide?
H2O5
Write the name for Mg(OH)2?
magnesium hydroxide
Does the following compound violate the zero charge rule? If so, calculate the net charge: Zn2N3? (Show you work)
Yes, it violates the zero charge rule.
Zn2+ x 2 = +4
N3- x 3 = -9
Net charge = 4 + (-9) = -7
Give at least 3 properties of metallic bonds:
malleable, solid at room temperature (except Hg), high melting and boiling points, malleable, ductile, good conductors of heat and electricity, sea of electrons, lattice structure
Cations bonded together with free floating electrons.
Element
Cannot be broken down by ordinary chemical means
What is the formula for cobalt (IV) sulfide?
CoS2
What is the name for NO4?
nitrogen tetraoxide
Does the following compound violate the zero charge rule? If so, calculate the net charge: Ga2O3 (show your work).
No, it does not violate the zero charge rule. This is the correct formula for gallium oxide.
Ga3+ x 2 = +6
O2- x 3 = -6
Net charge = 6 + (-6) = 0
Ionic bonds are formed between _____ and _____.
cations and anions
In the isotope magnesium-27, what does the number 27 represent?
mass number (protons + neutrons)
What is the formula for ammonium nitrate?
NH4(NO3)
What is the name for CoPO4?
cobalt (III) phosphate
Does the following compound violate the zero charge rule? If so, calculate the net charge: LiN2?
Yes, it does violate the zero charge rule.
Li1+ x 1 = +1
N3- x 2 = -6
Net charge = 1 + (-6) = -5
What two types of bonds form a lattice structure?
Ionic and metallic.
You are going to run an experiment to determine if the amount of sleep the night before an exam will impact test scores. What is the independent (IV) and dependent (DV) variables?
IV: the amount of sleep
DV: test scores
What is the formula for tin (II) sulfate?
SnSO4
Which of the following has the formula and name matched correctly?
A) SO is sulfur oxide
B) MnCO3 is manganese (III) carbonate
C) Li2O is dithium monoxide
D) CO6 is carbon hexaoxide
D: CO6 is carbon hexaoxide
A) SO is sulfur monoxide
B) MnCO3 is manganese (II) carbonate
C) Li2O is lithium monoxide
Does the following compound violate the zero charge rule? If so, calculate the net charge: In2(CO3)3?
No, it does not violate the zero charge rule. This is the correct formula for indium carbonate.
In3+ x 2 = +6
(CO3)2- x 3 = -6
Net charge = 6 + (-6) = 0
How can ionic compound conduct electricity in water?
Break apart into cations and anions when dissolved in water. The ions conduct electricity.