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Melting
s-->l
Freezing
l-->s
Boiling
l-->g
Condensation
g-->l
What are the 3 states of matter?
s, l, g
Deposition
g-->s
Sublimation
s-->g
Entropy
disorder
Kinetic Energy
how much movement the particles are undergoing, the average speed of them
Thermodynamics
how heat changes, flows, transfers, moves
Does a heating curve show an endothermic or exothermic process? Explain why.
Endothermic, because heat is added or temperature increases.
Does a cooling curve show an exothermic or endothermic process? Explain why.
Exothermic, because heat is being lost which causes temperature to decrease.
What are the 2 phases changes in a cooling curve?
Condensation and freezing.
What are the 2 phase changes in a heating curve?
Melting and Boiling
Does the phase change deposition show an exothermic or endothermic process? Explain why.
Exothermic, temperature is decreasing.
Explain how you would calculate the energy gained by a substance with a mass of 30g, a specific heat of 0.5J/gC, an initial temperature of 10 degrees Celsius and a final temperature of 25 degrees Celsius.
Multiply them all together. Subtract the temperatures to find change in temperature.
Which has a higher specific heat capacity? Water or Metal? Explain why.
Metal because it heats up faster. It needs less energy to heat up compared to water.
In a calorimetry lab experiment, which substance loses energy? Which substance gains energy? Explain how you know the answer to each.
Metal loses, water gains. Metal goes down in temp and water goes up in temp.
Explain what the triple point is on a phase diagram.
The only point where a solid, liquid, and gas can all coexist.
What is the goggles story/grading protocol for our labs?
Every time goggles aren't on after lab starts, goes down a letter grade
The amount of energy required to raise its temperature.
Which has a lower specific heat: metal or concrete or water? Explain why.
Metal, because it heats up the fastest or it requires the least amount of energy to increase the temp.
Kinetic Energy (movement, speed) decreases
Temperature decreases
Explain the 1st Law of Thermodynamics.
Energy cannot be created or destroyed.
Explain the 0th Law of Thermodynamics.
Heat will transfer to all objects in contact with each other until each object will reaches equlibrium in temp with one another.