Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Chemistry A-Level > 2.1.1 Atomic structure and isotopes > Flashcards

2.1.1 Atomic structure and isotopes Flashcards

1
Q

What is all matter composed of?

A

Atoms

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

What are atoms?

A

The smallest parts of an element that can take place in chemical reactions

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

What are the relative charges of the subatomic particles?

A

Proton: +1
Neutron: 0
Electron: -1

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

What are the relative masses of the subatomic particles?

A

Proton: 1
Neutron: 1
Electron: 1/1836 (negligible)

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

Why is the mass of an atom concentrated in the nucleus?

A

Because the nucleus contains the heaviest subatomic particles (the neutral neutrons and positive protons)

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

What holds an atom together?

A

The electrostatic attraction between the positive nucleus and negatively charged electrons

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

What charge is the nucleus of an atom?

A

Positive charge

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

What is the charge of an atom?

A

Neutral

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

What is the atomic number?

A

The number of protons in an atom

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

What is the mass number?

A

The sum of protons and neutrons in an atom

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

How many PROTONS are in an Mg2+ ion?

A

12

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

What are isotopes?

A

Different versions of the same element with the same number of protons but different number of neutrons

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

What is a cation?

A

A positively charged ion

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

What is an anion?

A

A negatively charged ion

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

Why do isotopes have the same chemical properties?

A

As isotopes have the same number of electrons, these electrons take part in chemical reactions so determine the chemistry of an atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Why do isotopes have different physics properties?

A

As they have different number of neutrons, neutrons only add mass to an atom, creating small differences to isotopes mass and density

17
Q

What is relative isotopic mass?

A

The mass of an isotope relative to 1/12th of a Carbon-12 atom

18
Q

What is relative atomic mass? (Ar)

A

The average mass of an atom relative to 1/12th of the mass of a carbon-12 atom

Chemistry A-Level (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions