1matter
anything that takes up space and has mass
2Elements
substances that can't be broken down into something smaller
3compound
combo of elements in set, definite proportions
4mixture
mix of atoms/molecues in variable amounts
5what are the two different types of mixtures?
homo and hetero
6properties
characteristics
7What are the four properties?
physical, chemical, extensive, and intensive
8extensive properties
depends on the quantity of sample (mass)
9intensive properties
remain unchanged regardless of sample size (boiling point)
10hypothesis
prediction/explanation of observations that can be supported or refuted by further observation
11experiments
procedures designed to create observatinos to support or refute a hypothesis
12scientific theory
model that attempts to explain what and why nature does
13scientific law
explains the is and summarizes past observations and predict future ones
14ions
atoms with a charge
15what is another name for a covalent compound?
molecular