Lecture 2/30 Flashcards
What is chemistry? (3 components)
Systematic study of:
- physical properties
- electronic interactions/reactions
- transformations of matter
What is matter?
anything with mass and volume
What is mass?
amount of matter
What is volume?
how much space is occupied
What is radioactivity?
transformation of matter, a nuclear process
Who formalized the systematic study of science?
Galileo Galilei
5 steps of the scientific method?
O- observe
H- hypothesis
T- test
E- evaluate
R- retest
Who developed the continental drift hypothesis?
Alfred Wegener
progression of ideas (3 steps)
- hypothesis
- theory
- law
What is the law of energy consevation?
Energy is never created or destroyed, it only changes form.
What is serendipity?
accidental (accidental discovery)
What are the 5 states of matter?
plasma
gas
liquid
liquid crystal display (LCD)
solid
where does plasma exist?
surface of stars
What is sublimation?
solid to gas
What is condensation?
gas to liquid
