States of Matter
Which state change is gas to liquid?
Condenstaion
which 2 of the following are pure substances
H2O2 Apple juice
uranium Trail mix
H2O2
uranium
which 2 of the following is a mixture
Oxygen Potato soup
Gatorade Sugar
Potato soup
gatorade
What are the 3 scales of temperature
fahrenheit, celsius, Kelvin
name 2 state changes
freezing, melting, condensation, evaporation, boiling, sublimation, deposition
What are the two types of pure substances?
Elements
Compounds
name the three types of mixtures
Solutions
Colloid
Suspensions
What is the freezing point of water in fahrenheit and celsius
32 degrees fahrenheit
0 degrees Celsius
273 degrees Kelvin
Is freezing a gain or lose or energy?
loss of energy (particles slow down)
define a compound
2 or more __________ that are _________ ________
2 or more elements that are chemically combined
What is the difference between homogenous and heterogeneous?
homogenous looks like just one substance or phase
heterogeneous we see different phases
What do we call the point were all matter stops moving? (the coldest possible temperature)
Absolute zero
Is boiling water a physical or chemical change?
Physical change
we do not change the water molecule from H2O just what phase its in
Give an example of a compound and an element
CO2 H2O NaCl C6H12O6
O2, Ne, Fe, W
If a mixture is positive for the tyndall test (see the line) but negative for the filter paper test (no particles seen) what type of mixture is this?
this is a colloid
Tydall test says particles present
filter paper says they are to small to see
Describe the Kinetic theory of matter
all matter is made of particles
all particles are moving
the more energy the faster the particles move