Chem 3 Jeopardy

Naming Compounds

100

The chemical formula of potassium phosphate. 

What is K₃PO₄?

200

The chemical formula for carbonic acid. 

What is H₂CO₃?

300

The name of Cu₂O. 

What is copper(I) oxide? 

400

The name of P₂O₅.

What is diphosphorous pentoxide? 

500

The chemical formula of ammonium hydroxide. 

What is NH₄OH? 

Acids and Bases

100

This is the conjugate base of water. 

What is the hydroxide ion (OH-)? 

200

This is the conjugate acid of the hydrogen sulfate ion, HSO₄^-.

What is H₂SO₄? 

300

This is the conjugate base of the hydrogen sulfate ion, HSO₄^-.

What is SO₄^2-?

400

This is the net ion equation for the reaction of ANY strong acid with a strong base. 

What is: H⁺_(aq) + OH^-_(aq) --> H₂O_(l)

500

These are the [H⁺], [OH^-], and pOH of a solution with a pH of 10.47. 

What is: 

[H⁺]: 3.4 x 10^-11 M 

[OH^-]: 3.0 x 10^-4 M

pOH: 3.53

Writing Balanced Equations

100

This is the balanced chemical equation when aluminum and chlorine gas react. 

What is:  2 Al_(s) + 3 Cl_2(g) --> 2 AlCl_3(s)

200

This is the balanced chemical equation for the reaction of calcium metal with a solution of acetic acid. 

What is:  

Ca_(s) + 2 HC₂H₃O_2(aq) --> Ca(C₂H₃O₂)_2(aq)  + H_2(g)

300

This is the balanced chemical equation for the combustion of liquid ethanol, C₂H₅OH. 

What is: C₂H₅OH_(l) + 3 O_2(g) --> 2 CO_2(g) + 3 H₂O_(g)

400

This is the net ionic equation for the reaction of solutions of lead(II) nitrate and ammonium chloride. 

What is: Pb²⁺_(aq) + 2 Cl^-_(aq) --> PbCl_2(s)    

500

This is a balanced chemical equation for the decomposition of tin(IV) nitride. 

What is: Sn₃N_4(s) --> 3 Sn_(s) + 2 N_2(g) 

Sig Figs and Conversions

100

This is the number of significant figures in 0.005010 m. 

What is 4? 

200

If a solution has an [H⁺] concentration of 3.2 x 10^-5 M, to how many places past the decimal should the pH number be? 

What is 2 places past the decimal? 

300

This is the Kelvin temperature that correspond to 98.6 ^oF. 

What is 310.2 K? 

400

This is the correctly rounded answer to the following addition problem: 5683.2 J + 4510 J + 326 J

What is 10520 J? 

500

This is the number of kg in 9.70 x 10⁶ mg. 

What is 9.70 kg? 

Potpourri

100

This is the molecular formula of a compound with an empirical formula of C₃H₄N₂ and a molar mass of around 204 g/mol. 

What is C₉H₁₂N₆?

200

This is amount of energy need to raise the temperature of 20.0 grams of water from 12.5^oC to 78.5^oC.

What is 5520 Joules? 

300

This is the mass of 4.31 x 10²⁵ molecules of dinitrogen tetroxide. 

What is 6590 grams of N₂O₄? 

400

This is the molecular geometry of the nitrite ion. 

What is bent (120^o)?

500

This is the concentration (in mol/L) of a solution made from 1.75 g of potassium hydroxide in 50.00 mL of solution. 

What is 0. 624 M KOH?