Question | Answer |
Why is a gas easier to compress than a liquid or solid? | The volume of a gas's particles is small compared to the volume of the gas. |
Why does the pressure inside a container of gas increase if more gas is added to the container? | There is an increase in the number of collisions between particles and the walls of the container. |
If the volume of a container is reduced, what will happen to the pressure inside the container? | Pressure will increase. |
As the temperature of the gas in a balloon decreases, which of the following occurs? | The average kinetic energy of the gas decreases. |
What happens to the pressure of a gas inside a rigid container if the temperature of the gas decreases? | Pressure decreases. |
How does gas pressure change when volume is doubled and temperature remains constant? | It reduces by one half. |
If a plumber pushes down on a piston reducing the volume, what happens to the pressure at a constant temperature? | Pressure increases. |
If a balloon is heated, what happens to the colume of the air in the balloon if pressure remains constant? | Volume increases. |
What gas law relates volume and pressure when temperature remains constant. | Boyle's Law. (Know the formula.) |
What gas law relates volume and temperature when pressure remains constant? | Charles' Law. (Know the formula.) |
What does the ideal gas law allow a scientist to calculate that other gas laws do not? | number of moles |
What is the ideal gas law? | PV=nRT |
What is Dalton's Law of Partial Pressure? | P total = P1 + P2 + P3 ..... |
What happens to the average kinetic energy of the particles in a sample of matter as the temperature of the sample is increased? | Average Kinetic energy increases. |
If two cubes of different metals have the same temperature, how do their average kinetic energies compare? | The avergage kinetic energies would be the same. |
Name 2 properties of solids? | dense and difficult to compress |
Which phase describes the direct change of a substance from solid to gas? | sublimation |
The state in which a substance exists at room temperature depends on the _________. | the strength of the attractive forces between the particles |
What is the order of the phases of matter from most organized particles to least organized particles? | solid, liquid gas |
What happens to the temperature of a substance during phase change? | remains constant |
In general, which of the following occurs as temperature increases? | Solubility of salts increases |
Which choice describes a concentrated solution? | Concentrated solutions have large amount of solution. |
What is the molarity of a solution that contains 10 moles of solute in 5 liters of solution? | 2M |
How is molarity expressed? | moles of solute/ 1 liter of solution |
What does not change when a solution is diluted by the addition of a solvent? | number of moles of solute |
Which choice best described the maximum amount of solute that will dissolve in a specific solvent under given conditions? | saturated |
What is the solute? | the substance being dissolved |