C1 : Atomic Structure Flashcards

1
Q

State the mass and charge of protons, neutrons and electrons. (6)

A

Mass. Charge
Proton 1. +1
Neutron. 1. 0
Electron. 0. -1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the mass number?

A

The number of neutrons +protons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the atomic number?

A

The number of protons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What did Democritus suggest?

A

Matter cannot be cut into smaller pieces - ATOMOS (indivisible)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What did John Dalton think atoms were?

A

He thought they were solid balls/ atoms combine to make compounds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Who discovered electrons and how and the plum pudding model?And how?

A

Jj Thompson - he used Cathode Ray Tube and found electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What was the plum pudding model?

A

The tiny negatively charged electrons are embedded in a cloud of positive charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What did Ernest Rutherford suggest and what lead to this discovery?

A

Suggested that protons must be concentrated in tiny spot in the centre - positive nucleus
This is bc of the Gold Foil Experiment -
+ charges went through but some came back

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What did Neils Bohr come up with to do with the energy of atoms?

A

Quantum theory- light given out when atoms were heated only had specific amounts of energy
Electrons orbit nucleus at different distances - shells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What did James Chadwick discover?

A

The existence of neutrons( no charge)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are isotopes? (2)

A

atoms of the same element that contain different number of neutrons but the same no. protons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Why do isotopes have the same chemical properties ?

A

They have the same no. Of electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are ions?

A

Atoms of the same element, with a different number of electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a solvent?

A

Substance that solutes dissolve in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Name the people in order who are involved in history of atom and the main thing they did. (6)

A

Democritus - matter can’t be cut - ATOMOS
John Dalton - atoms are solid balls/ combines to make compound
JJ thompson - electrons existence (using Cathode Ray Tube) and plum pudding model
Ernest Rutherford - positive nucleus - Gold foil experiment
Neils Bohr - specific energy fo atoms (Quantum theory)
Electrons orbit nucleus at different distances - shells
James Chadwick - existence of neutrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly