Temperature
Did the ice melt faster in the single-layered cup, or the double-layered cup?
What is the change of state from a solid to a liquid called?
Melting
A cup that is exposed to the environment is in an open system. How could we close the system?
Cover the opening; add a lid
True or false: Light can transfer energy into a system.
True
Do particles move faster in cold liquids or warm liquids?
Warm liquids
Will a drink stay colder if there is a lid on the cup (closed system), or if there is no lid on the cup (open system)?
The drink will stay colder if there is a lid on the cup (closed system).
What is the change of state from a liquid to a gas called?
Evaporation
Can matter enter or exit a closed system?
No
Can a temperature change occur in a room with no light?
Yes; Temperature changes in the water can still occur even if light does not transmit through the cup wall and even if there’s no light.
What is the movement of particles related to?
Temperature
Temperature is a measure of the average amount of _________ energy in a sample.
Kinetic
When water droplets form on the outside of a cold drink, do the droplets come from the liquid inside the cup or from the environment?
From the environment; we saw this when the mass of the cup increased.
Can temperature changes occur in a closed system (e.g., a cup with a lid)?
Yes
When the temperature of a sample of matter in one system decreases, the temperature of the matter in the neighboring system __________.
Increases
A particle's speed is related to how much ________ energy it has.
Kinetic
The total kinetic energy of a sample of matter is the sum of the kinetic energy of all the particles in that sample. If you add more particles, the total kinetic energy _________ but the temperature (the average kinetic energy) might stay the same.
increases
Which type of particles (solid, liquid, or gas) has the most space between them?
Gas particles have the most space between them.
Can liquids move through solids?
No; otherwise our drinks would not stay inside our cups!
How is kinetic energy transferred between particles?
Through collisions
True or false: Energy is transferred from lower-energy to higher-energy particles.
False; energy is transferred from higher-energy to lower-energy particles.
Temperature changes when energy moves from ________ to ________ matter.
Warmer to cooler
_________ and _________ are made of particles that move around freely, while _______ are not.
Liquids, gases, solids
Can heat enter or exit a closed system?
Yes
False.
Hot water because the kinetic energy (movement) of the particles is faster.