Concepts of Atomic Theory

Question 1

who is the greek philosopher?

Answer 1

Democritus

Question 2

called the small particles which could be indivisible or uncuttable

Answer 2

atomos

Question 3

who created atomos?

Answer 3

Democritus

Question 4

he is the british scientist

Answer 4

John Dalton

Question 5

what did John Dalton present in the year 1800’s?

Answer 5

existence of these particles which he called atoms

Question 6

the basic units of matter

Answer 6

Atoms

Question 7

basic structural unit of living organisms

Answer 7

Cell

Question 8

difference of smaller components of cell

Answer 8

Subcellular components

Question 9

smaller component of atoms

Answer 9

Subatomic particles

Question 10

what are the 4 concepts of Atomic Theory?

Answer 10

1. All matter is made up of atoms
2. An element is made of 1 kind of atom
3. A compound is made up of different kinds of atoms following a specific ratio

• Law of Definite Proportions

4. An atom cannot be created nor destroyed

• Law of conservation of Mass

Question 11

positively charged particle

Answer 11

proton

Question 12

negatively charged particle

Answer 12

electron

Question 13

no charged particle

Answer 13

neutron

Question 14

located inside the nucleus

Answer 14

proton, neutron

Question 15

located outside the nucleus

Answer 15

electron

Question 16

model used by John Dalton

Answer 16

Billiard Ball Model

Question 17

used to describe that atoms are extremely small, featureless and indestructible

Answer 17

Billiard Ball Model

Question 18

he proposed that you will ultimately reach a point when the pieces will no longer be divisible

Answer 18

Democritus

Question 19

he presented a scientific evidence

Answer 19

John Dalton

Question 20

what is the ratio of H20?

Answer 20

2:1

Question 21

what is the ratio of NaCl?

Answer 21

1:1

Question 22

what is the ratio of CO2?

Answer 22

1:2

Question 23

what is the ratio of ammonia (NH3)?

Answer 23

1:3