Chemistry Overview Round 2

Different Types Of Equations

100

What type of equation is this? C + O₂ -> CO₂

Synthesis

200

What type of equation is this? CH₄ + 2O₂ -> CO₂ + 2H₂O

Combustion

300

What type of equation is this? 2KClO₃ -> 2KCl + 3O₂

Decomposition 

400

What type of equation is this? Fe + CuSO₄ -> FeSO₄ + Cu

Single Replacement

500

What type of equation is this? BaCl₂ + NaSO₄ -> BaSO₄ + 2NaCl

Double Replacement

Empirical & Molecular Formula

100

What is the Empirical Formula?

The formula with the simplest whole number ratio of the elements in a compound.

200

What is the Molecular Formula?

An equation that shows the exact number and types of atoms present in a single molecule of a compound. 

300

The molecular formula of glucose is C₆H₁₂O₆. What is its empirical formula?

CH₂O

400

The empirical formula of a compound is CH₂. What is this compound's molecular formula?

C₄H₈

500

A compound has an empirical formula of CH₂O and a molar mass of 180g/mol. What is this compound's molecular formula?

C₆H₁₂O₆

Pressure Flasks

100

What flask is used to filter substances under reduced pressure?

Filter Flask Or Büchner Flask

200

A gas in a sealed flask has a volume of 2.0 L at 4.0 ATM. If the pressure is reduced to 2.0 ATM, what's the new volume?

4.0 L

300

A rigid flask contains a gas at 25 degrees Celsius. If the temperature is increased to 50 degrees celsius, what property of gas would increase?

Pressure

400

A gas occupies 500 mL at 1.0 ATM. If the pressure increased to 2.5 ATM, what would be its new volume?

200 mL

500

A sealed flask contains a gas at 300 K and 1.5 ATM. The temperature is increased to 450 K while the volume is constant. What is the new pressure?

2.25 atm

Gas Laws

100

What is the ideal gas law? 

PV=nRT

200

What does n represent in the ideal gas law? 

The number of moles within a gas.

300

A gas occupies 2.0 L at 1.0 ATM and 300 K. It is compressed to 1.0 L and heated to 450 K. What is the new pressure?

3.0 atm

400

A gas has a volume of 1.2 ATM at 300 K. If the temperature increased to 400 K, what is the new pressure.

1.6 atm

500

A mixture contains 5.00 g of each O₂, N₂, and Ne gas. What would be the volume of this mixture at standard pressure.?

13.8 L

Polyatomic Ions

100

What is a polyatomic ion?

A covalently bonded group of 2 or more elements that equal 1 charge.

200

What polyatomic ion has the formula SO₄^2-?

Sulfate

300

Which polyatomic ion has the formula NH₄⁺ and is the only common polyatomic ion?

Ammonium

400

Which polyatomic ion has a -1 charge, contains one phosphorus atom, and four oxygen atoms?

Phosphate (PO₄^3-)

500

What is the formula for a carbonate ion?

CO₃^2-