Chapter 2 Test Notes Flashcards
What is Matter?
Anything that has mass and takes up space.
What is an example of an element?
hydrogen
What is an example of a compound?
Carbon Dioxide
What is an example of heterogeneous?
salad dressing, paint, cereal, trail mix
What is an example of homogenous?
lemonade, sweet tea, Windex
What is a solid?
When matter is very close together and cannot move quickly, has a definite shape and volume
What is a liquid?
When molecules are close together and move slowly, indefinite shape and definite volume
What is a gas?
Molecules are widely spread, move around freely, and move at high speed, indefinite shape and volume
What is plasma?
Has lots of energy, and extra energy separates electrons to be electrically charged.
What is gas to liquid?
Condensation
What is a gas to a solid?
Deposition
What is a liquid to a solid?
Freezing
What is a solid to liquid?
Melting
What is a solid to a gas?
Sublimation
What is a liquid to a gas?
Vaporization
What is a chemical property?
Properties that can be only observed or measured by changing the chemical identity of the substance.
What is a physical property?
A property that can be observed directly or measured WITHOUT changing the chemical identity.
What is the difference between atoms and molecules?
Atoms are singular, the smallest state of matter, and combine to make molecules
Molecules are multiple compounds
What is the difference between mass and weight?
Mass- how much of a substance, stays the same
Weight-how much gravitational pull there is
What is the formula to solve for mass?
Mass=Density*Volume
What is the formula to solve for volume?
Volume=mass/density
What is the formula to solve for density?
Density=mass/volume
How is it possible that at 101 degrees Celsius, water is a gas, mercury is a liquid, and titanium is a solid?
101 degrees is only enough for water to be a gas but not anything more or else same with liquid and a solid.
Compare the 3 common states of matter according to their particle spacing and degree of particle motion.
Solid= is molecules that are very close together and cannot move.
liquid= is molecules close together and move around slowly
gas= molecules that are widely separate, move around freely and at high speed
