CO-LAB JEOPARDY

Nomenclature

100

What is the chemical formula for hydrobromic acid?

HBr

200

Water is the common name for H₂O. What is the name using proper nomenclature rules?

Dihydrogen monoxide

300

What is the chemical formula for nitrous acid?

HNO₂

400

Polyatomic ions are a set of covalently bonded atoms with a collective charge that can be thought of as behaving as a single unit. Name 3 polyatomic ions, and show their chemical formula and charge.

Lots of options

500

What is the name of this compound? Fe₂(SO₄)₃

Iron (iii) Sulfate

Balancing Equations

100

_NaN₃(s) --> _Na(s) + _N₂(g)

Fill in the blanks on this chemical reaction.

2NaN₃(s) --> 2Na(s) + 3N₂(g)

200

C₂H₆(g) + O₂(g) --> CO₂(g) + H₂O(g)

This equation is unbalanced. When balanced, what is the coefficient for O₂?

7

2C₂H₆(g) + 7O₂(g) --> 4CO₂(g) + 6H₂O(g)

300

Nitrogen gas and hydrogen gas combine to form ammonia (NH₃). What is the complete balanced equation?  

N₂ (g) + 3H₂ (g) --> 2NH₃ (g)

400

Aluminum metal reacts with sulfuric acid to produce aluminum sulfate and hydrogen gas. What is the ratio of hydrogen gas produced to aluminum metal consumed?

3/2, 3:2, 1.5:1, etc.

2 Al + 3 H₂SO₄ --> Al₂(SO₄)₃ + 3 H₂

500

Balance the following:

_C₅₇H₁₁₀O₆(s) + _O₂(g) --> _CO₂(g) + _H₂O(l)

2C₅₇H₁₁₀O₆(s) + 163O₂(g) --> 114CO₂(g) + 110H₂O(l)

Reactions

100

What are the products of a combustion reaction?

H₂O and CO₂

200

Name the five basic types of reactions.

Combination (Synthesis)

Decomposition

Single Displacement

Double Displacement

Combustion

300

Give a valid example for 3 of the 5 types of chemical reactions (other than those that have already appeared in this game).

Lots of answers

400

Pb + FeSO₄ --> PbSO₄ + Fe

What type of reaction is this? How do the charges on the transition metals change?

Single Displacement

Pb: 0 --> 2(ii)

Fe: 2(ii) --> 0

500

The following is a special type of double-displacement reaction. What is it called?

HCl (aq)+NaOH (aq)→H₂O (l)+NaCl (aq)

Acid-Base Reaction / Neutralization

Mole Concept

100

How many atoms are in a mole of 5,5-dimethyl-1-hexene?

6.022 x 10²³ (Avogadro's number)

200

What is the mass of 0.427 moles of carbon? SIG FIGS

5.13 grams

300

What is the molar mass of calcium bicarbonate? Ca(HCO₃)₂ 

162.11 g/mol

400

How many atoms of nitrogen are in 0.1250g of caffeine, C₈H₁₀N₄O₂?

1.55 x 10²¹ atoms of N

500

Determine the empirical and molecular formula for chrysotile asbestos. Chrysotile has the following percent composition: 28.03% Mg, 21.60% Si, 1.16% H, and 49.21% O. The molar mass for chrysotile is 520.8 g/mol.

Mg₃Si₂H₃O₈ (empirical formula)

Mg₆Si₄H₆O₁₆ (molecular formula)

Mystery Questions

100

How many sig figs are in 5.00907?

6

200

What are the units of molarity (M)?

moles per liter (mol/L)

300

What is the difference between empirical formula and molecular formula?

Empirical formulas show the simplest whole-number ratio of atoms in a compound, molecular formulas show the number of each type of atom in a molecule

400

The column on the periodic table containing F, Cl, Br, and I is called what?

Halogens

500

What is a limiting reactant? In the following situation, which compound is limiting?

5.15 g of hydrogen gas is reacted with 36.7 g of carbon monoxide to produce methanol (CH₃OH).

The limiting reactant is the reactant that is first to be used up in a chemical reaction.

H₂ is the limiting reactant.