Dalton's Atomic Theory Flashcards
Which of the following subjects is John Dalton well known for investigating?
a
pressure of gases
b
ratios of elements in compounds
c
protons and other subatomic particles
d
both A and B
both A and B
The law of constant composition was proposed by _____.
a
Proust
b
Lavoisier
c
Dalton
d
None of the above
Proust
Hydrogen and oxygen may or may not react in the same proportions by mass.
False
Who proposed the world’s first atomic theory model and stated that all matter is made of atoms?
Dalton
When did John Dalton start teaching school?
Twelve years old
According to Dalton, atoms cannot be ______.
Subdivided
Created
Destroyed
Which of the following is/are not true about Dalton’s theory of atoms?
Atoms can be subdivided into smaller particles
Atoms of different elements can combine in simple ___
number ratios to form chemical compounds.
whole
In what general type of reaction are atoms combined, separated, or rearranged?
chemical reaction
One piece of evidence for the Dalton’s atomic theory is the observation that
a compound always has the same proportions of different elements.
According to Dalton’s atomic theory, during a chemical reaction, there is _____ of atoms.
Rearrangement
According to Dalton’s atomic theory
atoms cannot be subdivided, created, or destroyed.
In a given type of chemical substance, the elements never combine in the same proportions by mass.
False
Did Dalton believe that atoms could be created or destroyed?
No
To propose his atomic theory, Dalton used:
All of the above
