M3

Question 1

subatomic particles

Answer 1

protons
electrons
neutrons

Question 2

Greek Philosophers hypothesized about the composition of
matter

Answer 2

early days of the atomic theory

Question 3

when does early days of the atomic theory happened

Answer 3

5th century BC

Question 4

who says “Everything is made up of small
indivisible particles known as ‘atomos’.”

Answer 4

Democritus

Question 5

accordin to Democritus: Everything is made up of small indivisible particles known as

Answer 5

atomos

Question 6

teacher of democritus

Answer 6

Leucippus

Question 7

Pioneer of the ideas of composition and change in matter

Answer 7

Leucippus

Question 8

Matter is composed of atomos and void

Answer 8

atomism

Question 9

in atomism, Matter is composed of

Answer 9

atomos and void

Question 10

The atomos may combine to form clusters in the void

Answer 10

atomism

Question 11

Change can happen when some atoms collide with each other in the void.

Answer 11

atomism

Question 12

e thought the the idea of
the atom goes against ex nihilo and it limits the power of the gods

Answer 12

aristotle

Question 13

who says matter is based from nature elements

Answer 13

aristotle

Question 14

what are the nature elements says by aristotle

Answer 14

• fire
• earth
• water
• air

Question 15

expressed the
existence of the aether

Answer 15

aristotle

Question 16

The idea of the atom was given importance during the

Answer 16

renaissance

Question 17

formulated his Atomic Theory based on the
atomos.

Answer 17

john dalton

Question 18

the first to suggest the
concept of the atom.

Answer 18

Ancient Greek philosophers

Question 19

the first Greek scholars
who believed in atomism and pioneered the study of the composition of and changes in matter

Answer 19

democritus and leucippus

Question 20

According to atomism, nature is composed of two basic principles

Answer 20

atom and void

Question 21

The idea of atomism was set aside because of the ideas of prominent natural philosophers like

Answer 21

plato about nature elements

Question 22

characteristics of The Atomos of Democritus

Answer 22

● solid
● indestructible
● collides with each other
● can form clusters

Question 23

Modification of Democritus’ Atomic Model

Answer 23

● There are smaller subatomic particles.
● Two types of the smaller particles are charged.
● Two types of the smaller particles are found at the center.
● The particles are very small and the atom is mostly space.

Question 24

positively charged and found at the nucleus.
Discovered by Ernest Rutherford

Answer 24

proton

Question 25

proton discovered by

Answer 25

Ernest Rutherford.

Question 26

neutral and found at the nucleus. Discovered by James Chadwick.

Answer 26

neutrons

Question 27

neutrons discovered by

Answer 27

James Chadwick.

Question 28

negatively charged and move around the nucleus. Discovered by JJ Thomson.

Answer 28

electrons

Question 29

electrons are discovered by

Answer 29

JJ Thomson.

Question 30

characteristics of Dalton’s Solid Sphere Model

Answer 30

● The atom is indestructible. ● The atom is a solid particle. ● Atoms of the same element have the same properties. ● The atom can combine to form compounds.

Question 31

characteristics of Thomson’s Plum Pudding Model

Answer 31

● The atom is divisible into charged particles. ● The atom is made of a massive mass with a positive charge. ● Electrons are negatively charged particles that are embedded on the body of the atom.

Question 32

characteristics of Rutherford’s Nuclear Model

Answer 32

● The atom is composed of positive and negatively charged particles. ● The nucleus is at the center of the atom and this is where the mass of the atom is concentrated. ● Protons are the positively charged particles and are found at the nucleus. ● Electrons are the smaller negatively charged particles and they move around the nucleus. ● The atom is made up of mostly space.

Question 33

The development of the atomic structure started with the idea presented by Democritus that all matter is made up of small indivisible particles called atomos. This idea is widely known in ancient Greece as

Answer 33

atomism

Question 34

more precise description of the atom was presented by John Dalton later on. In his

Answer 34

solid sphere model,

Question 35

THE ATOMIC MODELS

Answer 35

● Dalton’s Solid Sphere Model ● Thomson’s Plum Pudding Model ● Rutherford’s Nuclear Model