問題一覧
1
a book
published by Robert Boyle an Anglo-
Irish philosopher that defined
“element” as the simplest
composition of matter that can’t be
further broken down but can do
combination with other elements to
form a “compounds”.
The sceptical chymist
2
The literal meaning of atom in greek
Indivisible
3
This
concept of atoms resulted the idea of
Empledocles
4
English Chemist and
Physicist, stated his atomic
theory based on
approximately 150 years of
investigation by scientist
such as Robert Boyle,
Joseph Priestly and Antoine
Lavoisier .
Dalton’s atomic theory
5
is made up of extremely small-indivisible particles called
atoms.
Matter
6
of the same element are identical, and are different from
those of other elements.
Atoms
7
are form of different element combine in certain whole
number ratios.
Compounds
8
rearrange only during a chemical reaction to form a new
compound.
Atoms
9
A French chemist who found out that
oxygen is involved in combustion and
respiration. He also formulated the “Law
of conservation of Mass” which states
that in a chemical reaction, the mass of
the substance produced is equal to the
mass of the substance reacted.
Antonie-lauret lavoiser
10
formulated the
second fundamental law known as the Law of
Definite Proportions also called as the Law of
Definite Composition states that any sample of
the given compound will be always be composed
of the same elements in the same proportions by
mass.
Joseph louis proust
11
British scientist
who proposed the Law of Multiple
Proportions which states that for
elements that can form different
compounds, the masses of the
second element that can combine
with a fixed mass of the first element
are in ratio of small whole numbers.
John dalton
12
the existence of negatively charged particles.
Electrons
13
discovered by Ernest
Rutherford
-positively charged particles
- with his hypothesis that alpha
rays should pass through the
plum pudding like structure of the
gold atoms. But he observed that
some of the rays were deflected and
some bounced back to the
alpha particles.
Proton
14
discovered the highly
energetic rays could penetrate
matter . These rays could not be
deflected by a magnet and did not
consist of charged particles like the
cathode rays, he called it X–Rays.
Wilhlem rontgen
15
French physicist, associated X-rays with
fluorescent materials. He used a uranium
ore containing fluorescent material and
found out that it emitted radiation
continuously, even when it was not
fluorescing.
Henri becquerel
16
Becquerel’s
student suggested the name
“radioactivity” for this phenomenon.
Marie curie
17
And the material expressing such
phenomenon is known as
radioactive
18
began
their famous experiments to isolate the
radioactive components of uranium,
radium and polonium. This proved that
atoms have internal structure.
marie curie,pierre
19
identified two types of
radiation from the radioactive material–
alpha and - beta rays. Alpha rays contains
+2. Beta Rays consist of electron and
attracted to positively charged plate.
Ernest rutherford
20
identified two types of
radiation from the radioactive material
Alpha,beta rays
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問題一覧
1
a book
published by Robert Boyle an Anglo-
Irish philosopher that defined
“element” as the simplest
composition of matter that can’t be
further broken down but can do
combination with other elements to
form a “compounds”.
The sceptical chymist
2
The literal meaning of atom in greek
Indivisible
3
This
concept of atoms resulted the idea of
Empledocles
4
English Chemist and
Physicist, stated his atomic
theory based on
approximately 150 years of
investigation by scientist
such as Robert Boyle,
Joseph Priestly and Antoine
Lavoisier .
Dalton’s atomic theory
5
is made up of extremely small-indivisible particles called
atoms.
Matter
6
of the same element are identical, and are different from
those of other elements.
Atoms
7
are form of different element combine in certain whole
number ratios.
Compounds
8
rearrange only during a chemical reaction to form a new
compound.
Atoms
9
A French chemist who found out that
oxygen is involved in combustion and
respiration. He also formulated the “Law
of conservation of Mass” which states
that in a chemical reaction, the mass of
the substance produced is equal to the
mass of the substance reacted.
Antonie-lauret lavoiser
10
formulated the
second fundamental law known as the Law of
Definite Proportions also called as the Law of
Definite Composition states that any sample of
the given compound will be always be composed
of the same elements in the same proportions by
mass.
Joseph louis proust
11
British scientist
who proposed the Law of Multiple
Proportions which states that for
elements that can form different
compounds, the masses of the
second element that can combine
with a fixed mass of the first element
are in ratio of small whole numbers.
John dalton
12
the existence of negatively charged particles.
Electrons
13
discovered by Ernest
Rutherford
-positively charged particles
- with his hypothesis that alpha
rays should pass through the
plum pudding like structure of the
gold atoms. But he observed that
some of the rays were deflected and
some bounced back to the
alpha particles.
Proton
14
discovered the highly
energetic rays could penetrate
matter . These rays could not be
deflected by a magnet and did not
consist of charged particles like the
cathode rays, he called it X–Rays.
Wilhlem rontgen
15
French physicist, associated X-rays with
fluorescent materials. He used a uranium
ore containing fluorescent material and
found out that it emitted radiation
continuously, even when it was not
fluorescing.
Henri becquerel
16
Becquerel’s
student suggested the name
“radioactivity” for this phenomenon.
Marie curie
17
And the material expressing such
phenomenon is known as
radioactive
18
began
their famous experiments to isolate the
radioactive components of uranium,
radium and polonium. This proved that
atoms have internal structure.
marie curie,pierre
19
identified two types of
radiation from the radioactive material–
alpha and - beta rays. Alpha rays contains
+2. Beta Rays consist of electron and
attracted to positively charged plate.
Ernest rutherford
20
identified two types of
radiation from the radioactive material
Alpha,beta rays