Quiz 2 Flashcards
matter is anything that ________ and has _____
matter is anything that occupied space (volume) and has mass
what are the two forms that solid comes in? name examples of each
crystalline (ice, diamond, and iron) and amorphous (glass, rubber, and plastic)
classify the following: gasoline sea water pure water tap water bronze
gasoline: homo mix sea water: homo mix pure water: compound tap water: homo mix bronze: homo mix
examples of physical properties
- color
- ability to be hammered/shaped
- ability to conduct electricity
- physical properties due to evaporation or freezing
sublimation/deposition
solid->gas
gas->solid
examples of chemical change
- color change
- production of an odor
- change in temp
- evolution of gas (formation of bubbles)
- precipitate (formation of solid)
decanting
pouring out liquid leaving solid
distillation
a method of separating compounds based on boiling points
what is the law of conservation of mass
who stated this?
how did he study this?
matter is neither created nor destroyed in a chemical reaction
Antoine Lavoisier
the combustion of matter in sealed containers
energy is the _______ to do ____
energy is the capacity to do work
what doe work=?
work=force*distance
kinetic energy
the energy of motion
KE=(m*v^2)/2
potential energy
stored energy, can be converted to kinetic energy
exothermic
release energy
ex. fireworks
endothermic
absorb energy
ex. instant ice packs
