Unit 3 Flashcards
Energy
the ability to work or supply heat
Types of energy
kinetic - energy of motion (KE = 1/2m v^2)
potential - energy of position (PE = g x m x h)
Units of Energy
calorie (cal)
jewel ( J )
Specific heat
energy needed to raise 1g Bc 1C
q = m c delta t
homogeneous
heterogeneous
a uniform mixture that all looks the same
a mixture that does not all look uniform or the same
extensive
intensive
will change based on sample size
will be same no matter sample size
Physical change
Chemical change
use 5 sense, wont’t change it
how will it interact with other matter, results in something new
Tempurature equations
F = (1.8)(C) + 32 =
K = C + 273
mixture
two or more types of matter
pure substance
only one type of matter
element
one type of atom
compound
two or more different atoms chemically bonded
law of conservation of mass
The Law of Conservation of mass is the law of the universe that there is always a set amount of mass, and mass can not disappear.
