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Energy

Science

QuestionAnswer
Energy The ability to produce change or produce heat.
Potential Energy Energy stored in the object due to its position or composition.
Kinetic Energy Energy of motion. Energy in use.
Temperature A measure of the average kinetic energy of the atoms or molecules in the system.
As temperature increases, particles move Faster when it's warmer.
As temperature decreases, particles move Slower when it's colder.
Heat moves from Hot to cold.
Q= (Dividing) MCAT (Multiplying).
Exothermic A process that emits energy into the surroundings.
Endothermic A process that absorbs energy from the surroundings.
Q Heat J.
C Specific heat capacity J/C X G.
M Mass G.
AT Change in temperature Degrees C.
Start/Final Temperature Add on the answer and C is not in the formula because it's added on at the end (5 degrees C).
Rigid Does not change it's shape.
Fixed Shape Has a shape.
Fixed Volume Has a volume.
Law of Conservation of Energy Energy cannot be created or destroyed.
Why is the phrase, “you’re letting the cold air in!!!” wrong? It's not that air is going in, but the heat is going out since heat goes to cold.
Melting Change of physical state when a solid turns into a liquid.
Freezing Change of physical state when a liquid turns into a solid.
Vaporisation Change of physical state when a liquid turns into a gas.
Condensation Change of physical state when a gas turns into a liquid.
Heating and Cooling Curves Ice (Solid), Freezing/Melting/Ice/Water (Solid/Liquid), Water (Liquid), Boiling/Condensing/Vaporizing/Water/Gas (Liquid/Gas), Gas.
The Chart Heating and Cooling Curves Goes Increase, stays the same, increase, stays the same, and increase. Decrease, stays the same, decrease, stays the same, and decrease.
Why Can't Energy Be Created Or Destroyed? This is because it keeps changing it's form. (Kinetic to Potential to Kinetic to Potential)
Solid No real movement and compact. Rigid, fixed shape, and fixed volume. Cannot be crushed.
Liquid Spread out a little bit, some movement, and has a shape. Not rigid, no fixed shape, and fixed volume. Cannot be crushed.
Gas There are fewer particles and are farther apart. Not rigid, no fixed shape, and no fixed volume. Can be crushed.
How do you know which one is cold air and which one is hot air? The cold air is blue with short lines and closer together while the hot air is red with longer lines more spread out.
Specific Heat Capacity The amount of energy required to change a gram of a substance by one Celsius or Kelvin.
Heat Of Fusion The amount of energy required to change a gram of a substance from the solid to the liquid state (melting) 334 J/G.
Heat Of Vaporization The amount of energy required to change a gram of a substance from the liquid to the gaseous state (evaporation) 2260 J/G.
Formula For Melting and Freezing Q=mHf.
Formula For Boiling and Condensation Q=mHv.
Why Is There No Change In Temperature For Heat Of Fusion and Evaporation? There's no change of kinetic energy.
Sublimation, Boiling, Melting are... Endothermic.
Deposition, Condensation, Freezing are... Exothermic.
Heat Of Fusion and Vaporization Key Words Room temperature, melt, vaporize, heat, boil, solidify, liquid, evaporation, vaporization, gas, removed, added, solid, and no change in temperature. S --> L, L --> S, L --> G, G --> L
Specific Heat Question Key Words Weighing, raised, initial, final, change in temperature, absorbed, rises, increases, decreases, and releases. S, L, G
Created by: jschwartzman
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