Atom (History and Structures)

Question 1

He is the Father of the Modern Atomic Thought

Answer 1

Democritus

Question 2

Proposed that matter was made of different amounts of elements: earth, water fire, air, and ether.

Answer 2

Aristotle

Question 3

Small, hard particles that made up matter

Answer 3

atomos

Question 4

Viewed atoms as tiny, solid “billiard” balls

Answer 4

John Dalton

Question 5

Father of Modern Atomic Theory

Answer 5

John Dalton

Question 6

Discovered electrons

Answer 6

J.J. Thomson

Question 7

This experiment led to the discovery of electrons

Answer 7

Cathode Ray Tube Experiment

Question 8

What do raisins represent in the raisin bun model?

Answer 8

Electrons

Question 9

What was the experiment that led to the discovery of nucleus?

Answer 9

Gold Foil Experiment

Question 10

True or False:

Atoms are mostly made up of empty space.

Answer 10

True

Question 11

Who discovered the existence of protons and nucleus?

Answer 11

Ernest Rutherford

Question 12

He proposed the planetary model in which stated that electrons move around the nucleus in specific layers or orbitals.

Answer 12

Niels Bohr

Question 13

True or False:

James Chadwick was the one who discovered the nucleus.

Answer 13

False

Question 14

Who discovered the particles with no charge?

Answer 14

James Chadwick

Question 15

True or False:
According to Werner Heisenberg and his uncertainty principle, we cannot determine the position of an electron at a certain time.

Answer 15

True

Question 16

A model proposed by modern scientists where it is impossible to know where an electron is at any given time.

Answer 16

Electron Cloud Model (The Modern Model)

Question 17

What is in the center of an atom?

Answer 17

Nucleus

Question 18

Modified True or False:

Molecules are the smallest particle of an element.

Answer 18

False. It should be atoms.

Question 19

What is the building block of an element?

Answer 19

Atom

Question 20

Enumerate the subatomic particles.

Answer 20

Protons, Neutrons, and Electrons

Question 21

True or False:

The number of protons are equal to the number of electrons.

Answer 21

True

Question 22

They make up for almost all the mass of an atom.

Answer 22

Protons and Neutrons

Question 23

These are orbiting around the nucleus and have very little mass.

Answer 23

Electrons

Question 24

These are the smallest particles of an atom, along with electrons, that made up protons and neutrons.

Answer 24

Quarks

Question 25

What are the quarks of a proton?

Answer 25

2 up quarks and 1 down quarks (UUD)

Question 26

Quarks of a neutron.

Answer 26

1 up quarks and 2 down quarks (UDD)

Question 27

Why is electron not made up of quarks?

Answer 27

Because it is very small already.

Question 28

What is/are inside the nucleus?

Answer 28

Nucleon: Protons and Neutrons

Question 29

First scientist to show that the atom was made of even smaller things

Answer 29

J.J. Thomson

Question 30

What did J.J. Thomson called the negatively charged particle that he discovered?

Answer 30

Corpuscles

Question 31

Bonus question ems:

The first model to represent the atomic structure of a matter

Answer 31

J.J Thomson’s Plum Pudding Model.

Question 32

Atoms -> Subatomic -> ??

Answer 32

Elementary