The Atomic Structure

Question 0

Did not think there was a limit to the number of ways matter could be divided

Answer 0

Aristotle

Question 1

Believed matter was made of extremely small particles that cannot be divided

Answer 1

Democritus

Question 2

Thought all matter was made up of individual particles called atoms that cannot be divided

Answer 2

John dalton

Question 3

Who stated all atoms of the same element have the same mass and atoms of different elements have different masses

Answer 3

John Dalton

Question 4

Who provided the first evidence that atoms are made of smaller particles

Answer 4

JJ Thompson

Question 5

Who passed alpha particles that are very thin gold foil

Answer 5

Ernest Rutherford

Question 6

What was the result of the alpha particles passing through the thin gold foil

Answer 6

More word deflected than expected. some deflected 90°. Some bounced straight back.

Question 7

What did Ernest Rutherford discover

Answer 7

He discovered the nucleus

Question 8

What is the smallest particle of an element

Answer 8

Atom

Question 9

What is a positively charged subatomic particle that is found in the nucleus of an atom

Answer 9

Proton

Question 10

A proton has a charge of_____

Answer 10

positive one

Question 11

What is a negatively charged subatomic particle that is found in the space outside the nucleus

Answer 11

Electron

Question 12

What is a neutral particles found in the nucleus of an atom

Answer 12

Neutron

Question 13

What is the number of protons in an atom of that element

Answer 13

Atomic number

Question 14

What shows the number of electrons in and Atom

Answer 14

Atomic number

Question 15

What is the sum of the protons and neutrons in the nucleus of that atom

Answer 15

Mass number

Question 16

What is an isotope

Answer 16

Adams of the same element with different numbers of neutrons and different mass numbers

Question 17

What did Niels Bohr think

Answer 17

He thought that electrons moved in a constant speed and In a fixed orbit around the nucleus

Question 18

What is the possible energies that electrons in and Atom can have

Answer 18

Energy level

Question 19

What is an orbital

Answer 19

A region of space around the nucleus where an electron is likely to be found

Question 20

Each orbital can hold a maximum of_______.

Answer 20

Two electrons

Question 21

What is the arrangement of electrons in the orbital of an atom

Answer 21

Electron configuration

Question 22

What is ground state

Answer 22

The most stable configuration is the one where the electrons are an orbital with the lowest possible energy’s