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Chap. 3 PNHS


When an object has a definite shape, as well as a definite volume, it is a ____? A solid
When an object loses its shape, but keeps its definite volume, it is a ____? A liquid
When an objects has neither a definite shape nor a definite volume, it is a ____? A gas
True or False: When a moving ball comes into contact with another ball that is at rest, the first ball slows down, and the second ball stays in its place. There is no kinetic energy being transferred. False; When making contact, the first ball indeed slows down, but the second begins to move in a forward motion, with kinetic energy being transferred during the collision.
________ is the result of a force distributed over an area. Pressure
When you look at a graph and the temperature falls on -273.15 degrees C. This is equal to 0 degrees K and is also called what? Absolute Zero
State Charles's law and its equation. It states that the volume of a gas is directly proportional to its temperature in kelvins if the pressure and the number of particles of the gas are constant. Equation is: V1 V2 -- = -- T1 T2
State Boyle's Law and its equation. It states that the volume of a gas is inversely proportional to its pressure if the temperature and the number of particles are constant. Equation is: P1V1 = P2V2
Name at least 3 of the 6 common phase changes. Melting, Freezing, Deposition, Sublimation, Vaporization, and Condensation.
Which one is the situation where a system absorbs energy from its surroundings; endothermic or exothermic? Endothermic
Which one is the situation where a system releases energy to its surroundings; endothermic or exothermic? Exothermic
If one gram of ice absorbs 334 joules of energy as it melts, what is this amount energy referred to as? The energy is known as the Heat of Fusion.
What type of phase change occurs when a solid turns into a gas, or a vapor? Sublimation
How do you know if the change that occurred is Deposition? When a gas, or vapor turns right into a solid even though it has not be a liquid yet.
Name a good example of Condensation. When you get out of the shower, and you see a "cloud" on the mirror.
True or False: As the temperature increases, so too does the water vapor pressure. True
Where does evaporation take place? It takes place at the surface of the liquid.
If one gram of water gains 2258 joules of energy when it vaporizes at 100 degrees Celsius, what is this energy is called? Heat of Vaporization
Vaporization is which of the following; endothermic or exothermic? Endothermic
Created by: cdrew2016