2nd semester final 2022

If the number of moles of gas inside of a container increases, what will happen to the volume of the container if both temperature and pressure are kept constant?

• The volume will increase.
• The volume will decrease
• The volume will remain constant.
• None of the above.

At which of the following temperatures would the motion of all of an objects particles come to a complete stop?

• 0 K
• 0^oC
• 373 K
• -100^oC

Which of the following is not a point made by the kinetic molecular theory of gases?

• Gases are composed of tiny particles.
• The speed of gas particles is related to the temperature of the system.
• Gas particles are always moving with high speed random motion.
• Gas particles do not have mass or take up any space.

Charles’ Law states that if a given quantity of gas is held at a constant pressure, then its volume is directly proportional to the absolute temperature. This law explains why —

• the pressure of a gas increases when volume decreases
• a gas-filled balloon expands when it is heated 
• solids require heat in order to change into gases
• some gases only react with each other at high temperatures

Two Reactants and One Product

• Decomposition
• Synthesis
• Combustion
• Single Replacement

Always starts with a Hydrocarbon that reacts with oxygen and produces carbon dioxide and water. 

• Decomposition
• Synthesis
• Combustion
• Single Replacement

One reactant into several products.

• Decomposition
• Synthesis
• Combustion
• Single Replacement

One element replaces another in a compound.

• Synthesis
• Combustion
• Single Replacement
• Double Replacement

Ions in two compounds switch. 

• Synthesis
• Combustion
• Single Replacement
• Double Replacement

What is the type of reaction shown at the top?

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement