Download Worksheet: Development of Atomic Theory

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

History of molecular theory wikipedia, lookup

Ununennium wikipedia, lookup

Tennessine wikipedia, lookup

Transcript
Worksheet: Development of Atomic Theory
Name___________________
True-False: place a "+" in the blank if the statement is true, and a "O" in the blank
if the statement is false.
1. Dalton's atomic theory stated:
a. atoms are indivisible.
b. all atoms of the same element are alike.
c. atoms unite in small, whole number ratios
to form compounds.
_____
_____
_____
2. The Greek philosopher Democritus was one of the first
to suggest the existence of atoms.
_____
3. The word "atom" means invisible.
_____
4. A theory is an explanation of observable facts and
phenomena.
_____
5. Aristotle supported the idea of the atom.
_____
6. From the "gold-foil" experiment it was concluded that
the atom is mostly empty space.
_____
Short Answer and Fill in the Blanks:
1. What must models and theories do in order to remain valid?
a.
b.
2. The "gold-foil" experiment had the following results: ____________ of the
alpha particles were deflected, ______________ of the alpha particles
were reflected, and _____________ of the alpha particles passed through
the gold foil.
CHEMISTRY: A Study of Matter
© 2004, GPB
3.3