States of Matter
What is the most abundant state of matter in the universe?
Plasma
The wax of a candle turning from solid to liquid.
Melting
As kinetic energy increases, what happens to the “orderliness” of the particles?
Become less orderly
Element or Compound:
NaCl
Compound
What is the boiling point of water?
100oC
Which state of matter exists at extremely low temperatures, near absolute zero?
Bose-Einstein Condensate (BEC)
Frost on a car window.
Deposition
Is freezing an endothermic or exothermic phase change?
Exothermic
Heterogeneous or Homogeneous:
Mountain Dew
Homogeneous
What happens to temperature during a phase change?
Remains constant
What determines the shape and volume of a gas?
The container
Water turning to water vapor on the surface of a lake, below the boiling point of water.
Evaporation
Which type of change absorbs energy from its surroundings?
Endothermic
Physical or Chemical Change:
Burning a marshmallow
Chemical
If you have 50mL of water in a graduated cylinder, and you pour it into a large beaker, how many mL of water do you have?
50 mL
How are particles arranged in a crystalline solid?
In a structured, symmetrical, ordered fashion, geometric pattern
Dry ice.
Sublimation
What happens to the kinetic energy of particles when water freezes?
Decreases
Homogeneous or Heterogeneous:
Ocean Water
Heterogeneous
Why do we pair certain phase changes together, such as freezing and melting?
They are reversible opposites of each other
What does the kinetic theory of matter state?
Matter consists of tiny particles which are in constant motion.
Water forming on the outside of your glass in the summer.
Condensation
Name three phase changes that share the same characteristics?
Melting, Vaporization, Sublimation
OR
Freezing, Condensation, Deposition
Element or Compound:
Sg
Element
Why does your temperature eventually stop climbing and your graph flatten out?
Because temperature does not change during a phase change. The energy goes into separating or forming the bonds.