Chemistry in the Community1C-1D Test Study Guide
Section C
1)Name the process by which a metalis obtained from an ore.
2)Which “sphere” provides most of the raw materials needed by humans?
3)Ca2+ + 2e- Ca Is this an oxidation or reduction reaction? Be able to recognize AND write out either a reduction or oxidation reaction of a metal or ion in this form.
4)To reduce a metal from an ore, you must use a metal (more or less) reactive than the metal you seek to extract from the ore. (Circle either more or less)
5)Write a balanced redox reaction for the oxidation of Pb metal to a Pb2+ ion. Make sure you could do the same for a reduction reaction.
6)What are the percentages of the gases in the atmosphere?
7)OIL RIG
8)Write a balanced equation for the reduction of a zinc ion to a zinc atom (metal). Include the correct Lewis Structure (electron dots)
9)Magnesium (III) Nitrate ….Mg(NO3)3….contains how many atom of oxygen?______
10)Mg(s) + Ag+(aq) Mg2+(aq) + 2Ag(s) ……which atom is oxidized? ______which atom is reduced? ______what is the oxidizing agent? ______what is the reducing agent?______
11)What is the shortened term for an oxidation-reduction reaction?
12)Know the materials, purpose and general procedure of both labs (“Extracting zinc” and the video of “Copper plating”) completed in class.
13)Explain the usefulness of the mole concept in chemistry (think dozen)
14)Calculate the molar mass of a compound, given its formula and the atomic weights of its elements
15)One mole of aluminum is how many grams? How many atoms?
16)List the diatomic elements
17)In the electroplating cell, the object to be plated should be the a)anode that is positive b) cathode that is positive c) anode that is negative, d) cathode that is negative
18)4 moles of water is equal to how many molecules of water…show work to earn credit….ans= 2.408x1024
19)Which quantities contain the same number of atoms? A) 3 mol Ag and 3 mol N2 B) 1 mol CuCl2 and 1 mol of ZnBr2 Why?
20)How many moles of Magnesium are found in a 6.0775-gram sample of magnesium (Mg)?
Section D
21)State and apply the law of conservation of matter
22)Be able to complete an atom inventory of an equation and determine whether the equation is balanced (WS)
23)Relate balanced chemical equations to the law of conservation of matter…remember that matter includes mass and atoms
24)Write and explain balanced chemical equations (WS)
25)Distinguish between renewable (soil, wood, paper, trees, plants, water, air)and nonrenewable resources (petroleum, natural gas, ores, minerals, metals, light, electricity, coal)
26)Identify methods of conserving Earth’s resources (reuse, recycle…list advantages and disadvantages) …why are there concerns about the depletion of resources if, as the law of conservation of matter states, matter can neither be created nor destroyed?
27)Define the following terms: coefficients, subscripts, reactants, products, recycle,
28)Are mineral resources renewable or nonrenewable….and are they fairly evenly distributed or not fairly evenly distributed?
29)Define technology, alloys, superconductivity
30)What is an important superconducting material? What needs to happen to that element for it to become so?
31)Superconducting materials conduct electricity with almost no resistance at ______temperatures.
32)CuSCu + S
a)How many grams of copper are produced if 6 moles of CuS is broken down?
b)Determine how many moles are on the product side
33)2KBr + 2H2SO4 + MnO2K2SO4 + MnSO4 + 2H2O + Br2
a)How many atoms are on the reactant side?
b)How many moles of KBr are needed to produce 4 moles of MnSO4?