Chemistry Final Exam Jeopardy

Topic 1

100

Plants are given different quantities of sunlight and then their heights are compared.

What is the independent and dependent variables?

Independent: Quantities of sunlight

Dependent: Height of plants

200

A 2kg mass of sugar was dissolved in 10kg of water.  What is the mass of the solution after the sugar dissolved?

12 kg

300

What is Law of Conservation of Mass? 

Matter cannot be created or destroyed!

400

How many neutrons does nitrogen have? (You must go to the periodic table!)

7 Neutrons

500

How many grams are in 4.3 moles of HCl?

H=1g/mol

+Cl=35g/mol

(36 g/mol)4.3mol

= 155 g

Topic 2

100

1.Mr. P is 6’3.75”

2.Mr. P is 6’4”

Which statement is accurate and which is precise?

Statement one is accurate and precise

Statement two is accurate

200

Identify the reaction type

Zn + CuCl₂ => ZnCl₂ + Cu 

Single Replacement

300

DAILY DOUBLE: 

1.What is the charge for Strontium and Arsenic (look at periodic table)?

2.What would be the formula for the ionic compound of these two elements?

1.Sr→ +2

As-3

1.Sr₃As₂

400

What is the percent composition of Be₃N₂?

Be=(9g/mol)x 3=27g/mol

N=(14g/mol)x2= 28g/mol

                      =55g/mol

%Be=(27g/mol)÷(55g/mol)=49%

%N=(28g/mol)÷(55g/mol)=51%

500

CH₂ + O₂ →  CO₂ +H₂O

Balance this equation

CH₂ + 2O₂ →  CO₂ +H₂O

Topic 3

100

Define an ionic bond

When a metal bonds with a nonmetal and electrons are donated

200

Identify the following properties as belonging to metals, nonmetals or both

Shiny, conductive, forms bonds and molecules, malleable

Shiny → Metals

Conductive → Metals

Forms bonds and molecules→ both

Malleable→ nonmetal

300

Which element has an electron configuration of 1s²2s²2p⁶3s³3p⁶4s²4p⁴

Chromium

400

2H₂ + O₂ --> 2H₂O

50 H2 molecules and 100 O2 molecules are reacted to produce water. What is the limiting reactant in this reaction?

Hydrogen

500

The pressure of a 700 mL sample of gas is 32 kPa. What would be the pressure if the volume were decreased to 620 mL?

The pressure would be 36 kPa

Topic 4

100

If you have 1.00mg of water (D=1.00g/mL) and 2.00mg of solid carbon dioxide (D=1.56g/mL)

Who’s volume is bigger?

Water

200

Define a “balanced” chemical equation

The total number of atoms are equal on both sides of the equation

300

In a covalent bond, what determines if it will be polar? 

If there is a difference in the electronegativities between two atoms. One atom is pulling harder than the other. 

400

The total number of atoms represented by Ca₃(PO₄)₂

13 atoms in total

500

C₂H₆O is ethanol. What is the molar mass? 

46.0 g/mol 

Topic 5

100

What is the ideal gas law equation? 

PV = nRT 

200

Ca(OH)₂ + Al₂(SO₄)₃ --> CaSO₄ +  Al(OH)₃

The chemical is not balanced. I only want to know the type of reaction this one

Double Replacement

300

What is in every combustion reaction? 

C_xH_x (hydrocarbon) + O₂ --> H₂O + CO₂

400

H₂O +  SO₃ --> H₃SO₄

Balance the above reaction and identify the type of chemical reaction 

Decomposition

Balanced equation: 2H₂O + 2SO₃ --> 2H₃SO₄

500

Using SOME (not all!) of the chemicals below, write a single replacement reaction then balance the equation:

Ag

AgNO₃

N 

Cu 

O₂

CuNO₃

Ag + CuNO₃ --> AgNO₃  + Cu

OR 

Cu + AgNO₃ --> CuNO₃ + Ag 

Both equations are balanced!