Fill in the blanks:
Ionic bonding occurs when electrons are ___ between two atoms. Covalent bonding occurs when electrons are ___ between two atoms.
What is ionic bonding TRANSFERS electrons and covalent bonding SHARES electrons.
100
Balance this equation and identify the type of reaction.
____ Pb + ____ H3PO4 → ____ H2 + ____ Pb3(PO4)2
(numbers are subscripts)
What is 3,2,3,1 and single displacement
100
Calculate the molar mass of Al2O3 and (NH4)3PO4
What is Al2O3=101.96g/mol and (NH4)3PO4=149.12g/mol
100
For the following processes, identify the spheres carbon travels between and write the chemical equation.
cellular respiration and diffusion
What is cellular respiration: biosphere to atmosphere, C6H12O6 + O2 → CO2 + H2O (+ energy)
diffusion: atmosphere to hydrosphere, H2O + CO2 → H2CO3
100
Fill in the blanks: A molecule consisting of only two atoms has a __________ shape. A molecule with __________ atoms bonded to the central atom with __________ lone pair(s) of electrons has a linear shape.
A molecule consisting of only two atoms has a LINEAR shape. A molecule with TWO atoms bonded to the central atom with ZERO lone pair(s) of electrons has a linear shape.
200
When a metal and nonmetal bond together they form a ___ compound. When 2 nonmetals bond together they form a ___ compound.
What is metal+nonmetal=ionic and 2 nonmetals=covalent
200
Identify the type of reaction, name the product & write a balanced equation.
Li + N2 →
(numbers are subscripts)
What is synthesis. The product is lithium nitride.
6 Li + 1 N2 → 2 Li3N
200
True or False? If false, fix the statement to make it true.
1 mole of Lithium = 6.02x10^23 atoms of Lithium.
True or False? If false, fix the statement to make it true.
1 mole of Lithium = 6.02x10^23 grams of Lithium
What is True: 1 mole=6.02x10^23 atoms and
False: 1 mole Li = 6.94 grams Li
200
Name two process that transfer carbon atoms out of the geosphere.
What is erosion/weathering into the hydrosphere and combustion of fossil fuels into the atomosphere.
200
Fill in the blanks:
A molecule with ___ atoms bonded to the central atom with ___ lone pair(s) of electrons has a bent shape. A molecule with ___ atoms bonded to the central atom with ___ lone pair(s) of electrons has a trigonal pyramidal shape.
What is A molecule with TWO atoms bonded to the central atom with ONE or TWO lone pair(s) of electrons has a bent shape. A molecule with THREE atoms bonded to the central atom with ONE lone pair(s) of electrons has a trigonal pyramidal shape.
300
zinc carbonate, ZnCO3, is this type of compound.
phosphorus trioxide, PO3, is this type of compound.
What is ionic compound for ZnCO3 and covalent compound for PO3
300
Identify the type of reaction, name the products & balance the equation.
lead (II) nitrate + potassium hydroxide →
What is double displacement. Products are lead (II) hydroxide and potassium nitrate.
1 Pb(NO3)2 + 2 KOH → 1 Pb(OH)2 + 2 KNO3
300
What is the difference between molar mass and mole ratio?
What is molar mass is the mass of 1 mole of a substance (mass on periodic table) and mole ratio is the relationship between two substances in a balanced equation (the coefficients).
300
Recipe for cheesburger: 2 buns, 1 patty, 1 cheese.
I have 8 buns, 5 patties, 3 cheese.
Which ingredient is the limiting reactant. Why?
What is cheese. It limits the amount of product you can make, which is 3 cheeseburgers.
300
Why is it impossible for a hydrogen atom to have a double or triple bond?
What is hydrogen needs 2 valence electrons to be stable so it can only have a single bond. Double and triple has too many electrons.
400
State whether the following is ionic or covalent AND the formula of each compound.
barium nitrate and phosphorous trifluoride
What is ionic: Ba(NO3)2 and covalent: PF3
(numbers are subscripts)
400
Identify whether the following substances are soluble or insoluble in water.
CaSO4 and MgCl2
What is CaSO4: insoluble and MgCl2: soluble
400
If 3.2 moles of chlorine gas are used, how many moles of sodium chloride are produced? 2 Na + 1 Cl2 → 2 NaCl
What is 6.4 moles of NaCl
400
2 Al + 6 HBr → 2 AlBr3 + 3 H2
When 3.22 moles of Al reacts with 4.96 moles of HBr, how many moles of H2 are formed?
What is 2.48 mol H2
400
The molecular shape for H2CS
What is trigonal planar
500
State whether the following is ionic or covalent AND the name of each compound.
N2O6 and CuF2
(numbers are subscripts)
What is covelent: dinitrogen hexoxide and ionic: copper (II) fluoride
500
Predict products, include states of matter & balance the equation.
K2CrO4 (aq) + Ba(NO3)2 (aq) →
**Double Jeopardy question (worth additional 500 points if you get this correct): Draw a particulate diagram of this reaction.
What is
1 K2CrO4 (aq) + 1 Ba(NO3)2 (aq) → 2 KNO3 (aq) + 1 BaCrO4 (s)
**Double Jeopardy question:
Aqueous substance will break up into its ions when put in water. Solid precipitate will stay clumped together.
(I can check this answer for you. Call me over.)
500
If 43 grams of chlorine gas are used, how many grams of sodium chloride are produced? 2 Na + 1 Cl2 → 2 NaCl
What is 70.89 g NaCl
500
3 Si + 2 N2 → 1 Si3N4
21.44 g of Si reacts with 17.62 g of N2 , what is the limiting reactant? Show work.
What is doing 2 mass to mass stoichiometry problems. 21.44g Si will produce 35.7g Si3N4
17.62g N2 will produce 44.1g Si3N4
Silicon is the limiting reactant.
500
What is the main idea behind VSEPR Theory?
What is bonding pairs and lone pairs of electrons (substituents) want to be as far away from each other as possible.