chapter 7 review Flashcards
What happens when ice left on counter
melting
What happens when frost forms on the window on a cold day
deposition
What happens when water is left in a freezer
solidification
What happens when clothes left out to dry
evaporation
What happens when dry ice is used to create fog
sublimation
What happens when the bathroom mirror gets fogged up after a shower
condensation
What happens when a pond gets shallower at the end of a long hot summer
evaporation
What happens when your hair was wet when you left the house, but dries by the time you get to school
evaporation
What happens when the ice cream you are eating drips down your arm
melting
What happens when a full pot of soup fills only half of the pot after simmmering for 2 hours
evaporation
What happens when liquid glass cools and hardens
Deposition ? solidification
What happens when a cold drink is wet on the outside of the glass
condensation
What is the formula for density?
mass/volume mass divided by volume
the more energy particles have
the faster they move
when temperature of a solid, liquid or gas decreases
the particles slow down, lose energy, have less space between them
What is the temperature at which a solid turns to a liquid?
the melting point
Why do highway bridges have gaps built into them
for thermal expansion
when the thermal energy of a substance increases, its particles move father apart and as a result
density decreases?
the temperature at which a liquid turns to gas
evaporation
the amount of space taken up by a substance
volume
change in state from gas to solid
Deposition
can be liquid or gas
fluid
mass per unit of volume
density decreases?
change in state from liquid to gas
evaporation
change in state from solid to gas
evaporation
what is the difference between heat and thermal energy
heat is the amount of energy transferred between two objects and thermal energy is the amount of total energy (?)
why does a cold drinking glass crack when placed in very hot water?
There is an uneven thermal expansion, so the thin parts heat quickly from the water, the thick parts slower, so the brittle glass cracks.