Finals1 Flashcards
What should be done if the results of an experiment do not agree with ones hypothesis
Hypothesis should be altered to explain facts..run experiment again
Steps in the scientific method
Make an observation, formulate a hypothesis, perform the experiment, collect data, analyze data, make a conclusion
A summary of observed behavior
Natural law
What do we call an explanation of behavior
Theory
Element that has some characteristics of metals and nonmetals
Metalloids
The metalliods
B Si Ge As Sb Te
Fundamental units for mass, temperature, volume, and length in the SI system
Kg, kelvin, m3, m
How does a cubic centimeter compare to a millimeter? A liter?
They are equal
Mass is neither created or destroyed during regular chemical or physical changes
Law of conservation of mass
Any amount of a compound contains the same element in the same proportions by mass
Law of definite proportions
Applies when 2 or more elements combine to make more than one type of compound
Law of multiple proportions
Definite shape and volume
Solid
Definite volume indefinite shape
Liquid
Indefinite volume and shape
Gases