Matter Vocabulary
Everything that has mass and takes up space
Matter
How tightly atoms and molecules are packed together is referred to as
density
True or False. Thermal energy and temperature are the same thing
False - temperature measures thermal energy
What does the term conduction mean?
The transfer of heat energy between particles that are touching.
Matter with less density will ___________ and matter with greater density will _______________.
Rise, Sink
The state of matter that has definite shape and volume and has particles that are closely packed together
solid
What is the most density of a solid, liquid, and gas.
Most dense: Solid
Medium density: Liquid
Least dense: Gas
Thermal energy always transfers energy from ______ particles to _____________ particles.
Fast moving to slow.
Or Hot to cold
Give three examples of conductors
metal, nail, copper, etc.
How many parts of each atom is water? (H2o)
two parts hydrogen, one part oxygen
This state of matter has no definite shape, definite volume, and particles are free to move over each other but are still attracted to each other
Liquid
Which fluid is densest: Cold water or hot water?
Cold water
What is the transfer of thermal energy between substances
heat
Name three insulators
styrofoam, cotton, wool,
How many parts of atoms makes up the molecule Carbon Dioxide (CO2)?
One part Carbon, Two parts oxygen
This state of matter has no definite shape, no definite volume, and particles move randomly with little or no attraction
gas
When your chocolate bar melts in your pocket, what is happening with the density? Is it becoming more dense or less dense?
Less dense. The molecules are receiving more energy which helps them change state
Increasing the temperature depends on what three things?
the material of the object, mass of the object, how much heat was added
What is the best thermal insulator?
A vacuum
How do the molecules act in each of these states of matter?
gas - faster and free moving
liquid - Move, but slide past each other and are attracted to each other
solid - vibrate in place
What is more dense, cold air or warm air?
Cold air
The swimming pool has a temperature of 68 F and is 3 times the size of the hot tub which is 102 F. Which has more thermal energy, the swimming pool or hot tub? Why?
swimming pool because it has more mass (moving water particles)
Describe how you could design a container to keep an ice cream sandwich cool until lunch time.
Describe a container that has insulation that keeps the heat from the room transfering to the ice cream sandwich. (options: styrofoam, cotton, vacuum, etc.)