Chapter 1 Flashcards
(33 cards)
Chemistry
The study of matter and the changes that it undergoes
Law
concise statement that describes the relationship between phenomena
Theory
unifying principle that explains a body of facts
Matter
anything that occupies space and has a mass
3 states of matter
solid, liquid, gas
Solid
particles held in fixed positions with little freedom of motion
Liquid
particles are free to move/slide past one another; takes the shape of its container
Gas
particles separated by distance with constant, random motion; expandable or compressible
Pure substances
matter with a definite or constant composition
Elements
substances that cannot be broken down into simpler substances
Compounds
consist of two or more elements
Mixture
combination of two or more substances
Homogenous mixture
composition is uniform throughout
Heterogenous mixture
composition is not uniform
Length SI unit
meters (m)
Mass SI unit
kilograms (kg)
Time SI unit
seconds (s)
Current SI unit
amperes (A)
Temperature SI unit
Kelvin (k)
Tera
10^12
Giga
10^9
Mega
10^6
Kilo
1,000 or 10^3
Deci
1/10th or 10^-1
