# 6-13-17 Review Reaction Rates and Equilibrium / Final Review 6-13-17 Review Reaction Rates and Equilibrium / Final Review Do Now: Final Review materials...Questions ???

Agenda: Go over Stuff! Review Announcement: AP summer assignments: Env. C307, Physics 1 C209 (Absolute Zero? ) Homework: Study / Practice

6-13-17 Last day of class before final!! Do Now: Please take out your final exam topic list and get ready to ask me specific questions.

Agenda: Questions? Review Game Homework: Study for your final REMEMBER TO BRING #2 PENCIL,

CALCULATOR AND TEXT BOOK!!!! Calculate the empirical formula of a compound that contains: 25.9 % N, 74.1%O

Calculate the empirical formula of a compound that contains: 67.6%Hg, 10.8% S, 21.6% O MAVA = MBVB

Final Exam Review What 3 things should you bring to class on final exam day?

What 3 things should you bring to class on final exam day? #2 pencil Calculator Textbook

What is the percent mass of Carbon in carbon dioxide? Answer 27%

What is used to measure volume accurately in the lab? What

type of elements tend to lose electrons in a chemical reaction? Calculate the empirical

formula of a compound that contains: 25.9 % N, 74.1%O Give

an example of a quantitative observation. List

2 ways to increase the rate of a reaction. Name

a substance that cannot be separated by a physical change. What is the Volume

in mL? What tool is used to measure mass?

How do you convert Celsius to Kelvin?

Write the chemical formula for Aluminum Sulfide. A

gas has a volume of 2.2 L under 95 kPa of pressure. What is the new volume if the pressure is increased to 140 kPa?

Answer: 1.5 L

Write the chemical equation for the combustion of CH4 and balance it.

Answer: CH4 + 2O2 CO2 +2H20

Which group on the periodic table contains the most reactive metals?

What is the density of a metal that has a mass of 33.2 grams and a volume of 6.1cm3? Sig figs count and units! What is the density of a metal

that has a mass of 33.2 grams and a volume of 6.1cm3? Sig figs and units count! Answer: 5.4

g/cm 3 State

the Law of Conservation of Matter Which element has the largest atomic radius?

Na, K, or Cs Which

of the following is not conserved in a chemical reaction? A. Energy B. Atoms C. Mass

D.Moles What is the maximum number of electrons in the 5th energy level?

Answer: 50 2n2 n= principal energy level So, 2(5)2 = 2 x 25 = 50

What is the electron configuration for Iron?

Answer: (26 electrons) 2 part question: How many liters are equal to 245 mL? How many cm3 is this?

What is the shape of a water molecule?

Why do ionic compounds conduct electricity when dissolved in water.

Balance the following equation Al + Br2

AlBr3 Answer

2Al+ 3Br2 2AlBr3 How many molecules are there in 2.3 moles of CO2?

How many molecules are there in 2.3 moles of NaCl? Answer: 2.3 x 6.02 x 1023 1.4 x 10

24 What is molarity? Rank the following from

highest electronegativity to lowest: Li, Cs, F, N

Rank the following from highest electronegativity to lowest: Answer:

F, N, Mg, Li, Cs Give an example of a metalloid. What is the name of this

compound: CuS? Which group of elements is the least reactive?

What is the chemical formula for: Ca

2+ and PO4 3-

What is the chemical formula for: Ca 2+

and PO4 Answer: Ca3(PO4)2

3- What mass of MgCl2 is needed to prepare a 1.0M, 500mL solution?

What mass of MgCl2 is needed to prepare a 1.0M, 500mL solution? Answer:

1.0M = 1 mole / liter 1 mole of MgCl2= 24 + 70 = 94 grams 94g x 1mol x 1 L x 500mL = 47 grams mol

Liter 1000mL How do you calculate percent yield?

Convert 2.3 grams of H2O to moles. Convert 2.3 grams of H2O to moles.

Answer: 2.3 grams x 1mol H2O= 0.13 mol

18 grams What is the oxidation number of phosphorus? Name

2 ways you can increase the rate that a salt will dissolve in water. A

substance has a pH of 12, is it an acid or a base? If each diagram was originally the same solution,

which solution has had some solvent added? A B

What is the percent mass of carbon in carbon dioxide? What is the percent mass of carbon in carbon dioxide? Answer:

27% How many atoms of Copper are there in 32 grams of Copper?

How many atoms of Copper are there in 32 grams of Copper? Answer: 3.01

x 1023