Unit 1 exam terms Flashcards
1
Q
Define hypothesis
A
tentative explanation for an answer to a question
2
Q
3 ways to obtain knowledge
A
transmission, observation, reason
3
Q
Define theory
A
a logical structure that explains and predicts a variety of observations
4
Q
Define law
A
a general statement of scientific fact
5
Q
Define independent variable
A
something we control
6
Q
define dependent variable
A
the thing affected by the experiment
7
Q
define extraneous variable
A
not controlling, but it affect DV
8
Q
element vs compound
A
element is only 1 type of atom, a compound is 2 or more elements chemically joined togther
9
Q
Atomic # (?)
A
number of protons (Z)
10
Q
Mass # (?)
A
number of protons and neutrons (A)
11
Q
Atomic mass
A
average of isotope mass
