Third Nine Weeks- 9 weeks review JEOPARDY Third Nine Weeks- 9 weeks review

El Dorado High School AZTECS 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500

Which of the following are found in pure water? A hydroxide ions B hydronium ions C water molecules D all of these A: D. all of these S2C04 Jeopardy Review

What is the concentration of H3O+ in pure water at 25 °C. F 10-7 M G 7 What is the concentration of H3O+ in pure water at 25 °C? F 10-7 M G 7.0 M H 10.7 M J 107 M A: F. 10 ^-7 S2C04 Jeopardy Review

An aqueous solution of sodium hydroxide reacts completely with a solution of hydrochloric acid. After all the water evaporates from the reaction mixture, what will remain? F sodium chloride G chlorohydroxide H sodium oxide J sodium chlorate A: F. sodium chloride S2C04 Jeopardy Review

What is the most common oxidation number of combined sodium What is the most common oxidation number of combined sodium? F 2 G 1 H 0 J +1 A: J. +1 S2C04 Jeopardy Review

In balanced chemical equations, the sum of all the oxidation numbers is — A half of the number of elements B always +1 C always –1 D always zero0 A: D. always zero S2C04 Jeopardy Review

In the reaction 2K + Cl2 → 2K+ + 2 Cl which element(s) is/are reduced In the reaction 2K + Cl2 → 2K+ + 2 Cl which element(s) is/are reduced? F K only G Cl2 only H both K and Cl2 J neither K nor Cl2 A: G.) Cl2 only S2C04 Jeopardy Review

What are the oxidation numbers in the compound H2SO4. A What are the oxidation numbers in the compound H2SO4?   A.) H = +1, S = 0, O = 2 B.) H = +1, S = +6, O = -2 C.) H = -1, S = +7, O = 1 D.) H = +1, S = +1, O = 1 A: B. S2C04 Jeopardy Review

What are the oxidation numbers in the compound NaCl What are the oxidation numbers in the compound NaCl? A Na = 0, Cl = 0 B Na = +1, Cl = -1 C Na = 1, Cl = +1 D Na = +2, Cl = 2 A: B.) S2C04 Jeopardy Review

Which of the following statements is correct regarding oxidation and reduction processes? A Oxidation decreases the oxidation number. B Oxidation increases the oxidation number. C Reduction increases the oxidation number. D Oxidation and reduction have no effect on the oxidation numbers.I 400 A: B. S2C04 Jeopardy Review

Which must be present for a piece of iron to rust Which must be present for a piece of iron to rust? A carbon B chlorine C oxygen D sodium 500 A: C.) oxygen S2C04 Jeopardy Review

In a redox reaction, the chemical which gains electrons is called the — A oxidizing agent B neutralizer C reducing agent D releasing agent TH A: A S2C04 Jeopardy Review

What is the pH of a basic solution A: above 7 S2C04 Jeopardy Review

For two acids of equal concentration, the stronger acid has — A a higher concentration of hydroxide ions B a higher pH C a higher concentration of hydronium ions D a stronger bond A: C. S2C04 Jeopardy Review

Which of the following is used to calculate the average atomic mass of an element? F the naturally occurring isotopes G the five most abundant isotopes H the isotopes that are man made J the least common isotopes H A: F. the naturally occurring isotopes S2C04 Jeopardy Review

 How should the students check to make sure that the liquid in the beaker at the start is really the acid instead of the base? F Taste it to make sure it is sour. G Feel it between their fingers, bases are slick. H Check the pH meter reading. J Use all of the above to make sure. A: H. S2C04 Jeopardy Review

A sample of fruit juice is found to have a hydrogen ion concentration of 2.87 x 10-4. What would the pH be? F 2.87 G 3.54 H 4.58 J 8.16 A. G. S2C04 Jeopardy Review

What is the correct net ionic equation for the following formula: 1 Na2CO3(aq) + 1 FeCl2(aq)  1 FeCO3(s) + 2 NaCl(aq) A. Na+ + Cl- → NaCl B. 2Na+ + 2Cl- → 2NaCl C. Fe +2 + CO3 -2 → FeCO3 D. Fe+ + CO3- → FeCO3 A A. C. S2C04 Jeopardy Review

What is the net ionic equation for the equation below: 1 Mg(OH)2(aq) + 2 HCl(aq)  1 MgCl2(aq) + 2 H2O(l) A: 2 H+ (aq) + 2 OH- (aq)  2 H2O S2C04 Jeopardy Review

What is the pH of an acidic solution A: below a 7 S2C04 Jeopardy Review

What is the pH and pOH for the given number [H+] = 2.0 x 10-3 M = A: pH= 2.70 pOH= 11.3 S2C04 Jeopardy Review

What is the pH of a solution that has a pOH of 3.2? A: pH= 10.8 S2C04 Jeopardy Review

What is the pH of a neutral substance? S2C04 Jeopardy Review

What is the pOH of a solution if the [H+] is 3. 4 x 10-5M What is the pOH of a solution if the [H+] is 3.4 x 10-5M? ______________ Is it an acid, base or neutral substance? T A: 9.53, Acid S2C04 Jeopardy Review

Acids turn blue litmus paper ________________ A: red S2C04 Jeopardy Review

Bases turn red litmus paper __________________. C A: Blue S2C04 Jeopardy Review