DALTON’S
ATOMIC
THEORY
Activity: Jumbled Words
CONVERSAITON
Activity: Jumbled Words
CONVERSAITON
Conservation
NROPORTIOP
NROPORTIOP
Proportion
RTAIO
RTAIO
Ratio
MOTA
MOTA
Atom
SASM
SASM
Mass
His atomic theory states the following:
Matter is made up of very small, invisible, and
indivisible particles called atoms.
Atoms of the same element have the same
properties. Atoms of different elements differ in
properties.
Atoms cannot be created nor destroyed in any
chemical reaction.
Atoms combine with each other in whole number
ratios to produce compounds.
ANTOINE LAVOISIER
-FRENCH CHEMIST
-1789
The law of mass conservation
states that in an ordinary
chemical reaction, the total mass
of the reactants should be equal to
the total mass of the products.
This is similar to the statement that
matter is neither created nor
destroyed in a chemical reaction.
JOSEPH LOUIS PROUST
-FRENCH CHEMIST
The law of definite proportion
states that a given chemical
compound always contains the
same elements in the exact
same proportions by mass,
regardless of its source or how it
is prepared.
JOHN DALTON
-1800
The law of multiple proportions
states that the mass of one
element that can combine with a
fixed mass of another element can
be expressed in a ratio of small
whole numbers.
Video time!
https://youtu.be/K2MRZFCblss?si=Kkbph2Zp
C_LxASSt
ASSESSMENT
1. Name of the scientist who discovered the Law of Multiple Proportions.
a. J.J.Thomson
b. John Dalton
c. Joseph Louis Proust
d. Antoine Lavoisier
2. The scientist who discovered the law of conservation of mass and is also called
the father of modern chemistry is?
a. J.J.Thomson
b. John Dalton
c. Joseph Louis Proust
d. Antoine Lavoisier
3. States that different samples of a pure compound will contain the same element(s) in
the same proportion.
a. law of mass conservation
b. law of multiple proportion
c. law of definite proportion
d. law of constant proportion
4. States that the mass of one element that can combine with
a fixed mass of another element can be expressed in a ratio
of small whole numbers.
a. law of mass conservation
b. law of multiple proportion
c. law of definite proportion
d. law of constant proportion
5. States that in an ordinary chemical reaction, the total mass of the
reactants should be equal to the total mass of the products.
a. law of mass conservation
b. law of multiple proportion
c. law of definite proportion
d. law of constant proportion
THE END!