Matter
What is the definition of matter?
Anything that has mass and takes up space.
Describe particles motion in the kinetic theory at higher temperature
Particles speed up and spread farther apart
What is the formula to find Density?
Density = mass divided by volume
Air is classified as matter but light and sound are not. Why?
air has mass and volume
You measure 200g of a liquid that has a density of .80g/mL. What is its volume?
250mL is it's density?
What is the smallest unit of an element?
an atom
What is the difference between a solid and a liquid?
although they both have a definite volume, a liquid doesn't have a definite shape.
Two objects have equal volume, but one feels heavier when lifted. What explains this difference?
the heavier object has greater density
Water droplets forming on a cold can on a hot day illustrate which process and energy change?
Condensation with energy released
What are two forms of plasma
stars and fluorescent lights
What is an example of a physical property of matter?
five senses.
color, texture, odor, etc.
Name the 5 phase changes.
Melting, freezing, condensation, sublimation, and evaporation
You measure 200g of a liquid that occupies 250mL. What is it's density?
0.80g/mL
Why is a hair cut defined as a physical change?
only size and shape are altered.
A salad with lettuce, tomatoes, cheese, and croutons would be what type of mixture?
heterogeneous mixture with uneven distribution
Classify carbon monoxide, CO, as element or compound.
Compound
If the gas inside a fluorescent light becomes plasma, what key property allows that glow to occur?
ability to conduct electricity
A rock has a mass of 454g and a volume of 100 cubic centimeters. What is it's density?
4.54g/cm3
The leaves changing in the fall is an example of what type of change?
chemical
what is a homogeneous mixture?
components are evenly distributed throughout
What is a chemical change?
one or more substances form entirely new substances.
Explain how temperature relates to particle motion.
Temperature measures average kinetic energy of particles
Copper has a density of 8.9g/cm3 . A sample occupies 23.4cm3. What is the mass of the copper?
208g
Name 2 forms of plasma
stars, fluorescent lights
A spoonful of dry ice releases visible vapor without melting into liquid first. What phase change is occurring?
Sublimation to carbon dioxide gas