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 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 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 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/cm3

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 Atoms Mass 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 PO43- Answer: Ca3(PO4)2

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