vocabulary
What does the prefix "Kilo" mean?
100
What are the 4 main states of matter?
Solid, Liquid, Gas, Plasma
What do we call the process of liquid changing into a solid?
Freezing
What does the term "properties" mean as related to chemistry?
Characteristics
what is the fastest animal on the planet?
Peregrin Falcon
Define Matter
Anything that has mass and takes up space
Why do solids not change shape easily?
The atoms are tightly packed and do not generally move around one another.
Why is it often challenging to see a gas?
The atoms are so spread out that it is hard to see
List three physical changes of matter.
Melting, ripping, cutting...
Which teacher has been at Greenwood the longest?
Anne Bebko
What is the state of matter made up of electrically charged particles?
Plasma
In which state is most matter in the universe?
Plasma
Explain how evaporation occurs.
Molecules at the surface of a liquid have enough heat energy to break free from the liquid and become a gas
List three chemical changes of matter
Burning, exploding, reacting, digesting...
Which is the only planet that spins clockwise?
Venus
What is the term for a solid turning directly into a gas?
Sublimation
Which state of matter has no definite shape or volume?
Gas
generally, what causes matter to change state?
A change in temperature
What is the difference between a chemical and a physical change?
Physical- no new substance is produced
chemical- a new substance is produced
What 5 current teachers at Greenwood teach, or have in the past taught science?
Rich, Aaron, Nate, Jesse, Anne Bebko
Define Density
The amount of matter per unit of volume
Where is one place you can see plasma on earth?
TV, Light, Sun...
What is one solid that will go through the sublimation process at room temperature?
Moth balls, iodine, dry ice...
What are pieces of evidence to let you know that a change you witnessed was a chemical change?
Change in temp or color, bubbles, or two liquids becoming a solid
At what temperature are Celsius and Fahrenheit the same?
-40 degrees