Brainscape's Knowledge GenomeTM

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


See full index

Chemistry honors > Quiz #1 + Unit 1 test > Flashcards

Quiz #1 + Unit 1 test Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Chemistry flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
1
Q

What is chemistry?

A

The study of composition, properties, and reactions to matter

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

Who thought of the atom?

A

Democritus

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

What did Democritus do?

A

He thought of the atom and named it.

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

Who proved the existence of atoms?

A

Dalton

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

What did Dalton do?

A

He proved the existence of atoms, conducted gas experiments, and created the solid sphere model.

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

Who discovered electrons?

A

Thomson

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

What did Thomson do?

A

He discovered electrons, conducted the cathod ray tube experiment, and created the plum pudding model

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

Who discovered that there are protons in the nucleus?

A

Rutherford

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

What did Rutherford do?

A

He discovered that there are protons in the nucleus, conducted the gold foil experiment, and created the planetary model.

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

Who discovered neutrons?

A

Chadwick

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

What did Chadwick do?

A

He discovered neutrons, conducted the wax/oil experiment, and updated the planetary model

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

How do you calculate the number of electrons?

A

Atomic # - Charge

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

How do you calculate the number of protons?

A

The atomic #

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

How do you calculate the number of neutrons?

A

Mass # - Atomic #

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

What is an ion?

A

An atom with a different number of electrons

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

What is a cation?

A

A positive ion

17
Q

What is an anion?

A

A negative ion

18
Q

What is the preferred charge of elements on the periodic table?

A

+1, +2, ???, +3, can’t say, -3, -2,-1, 0.

19
Q

What did Plank do?

A

Discovered the emission spectrum and that energy comes in the form of photons, or “light packets.”

20
Q

What did Einstein do?

A

He validated Planck by modeling that frequency of light, not strength or brightness of light, resulted in the emission of light.

21
Q

What did Bohr do?

A

He proposed that when the electrons move energy levels, photons are emitted.

22
Q

What did De Broglie do?

A

He discovered that electrons can behave as a particle or a wave, and so electrons can also be described as having a “dual nature.”

23
Q

What did Heisenberg do?

A

He proved that you cannot know an electron’s location and speed at the same time. This is known as the Heisenberg uncertainty principle.

24
Q

What is the Heisenberg Uncertainty Principle?

A

That you can’t exactly know an electron’s location and speed at the same time.

25
Q

What did Schrodinger do?

A

He created a mathematical model for the electrons wave nature

26
Q

What did Fermi do?

A

He created a statistical analysis of electrons and their location

27
Q

What is the Bohr model?

A

A model that shows that electrons can be located I n specific energy levels, and movement between these energy levels results from the absorption or emission of energy

28
Q

What are orbitals?

A

A probability map of where elections are

29
Q

What is the Aufbau Principle?

A

Electrons fill orbitals starting at the lowery energy sub level before filling higher levels.

30
Q

What is Hund’s rule?

A

That unoccupied orbitals will be filled before occupied orbitals are reused.

31
Q

What is Pauli’s exclusion principle?

A

That two electrons occupying an orbital must have an opposite spin

32
Q

What are orbital diagrams?

A

The diagram with the arrows, numbers, and letters.

33
Q

What is electron configuration?

A

The model with numbers and letters, but not arrows.

34
Q

What is abbreviated electron configuration?

A

Also known as noble gas configuration, it uses the noble gas that comes before it to shorten the notation.

35
Q

What does isoelectric describe?

A

It describes two different atomic species (atoms or ions) that have the same number of electrons

36
Q

What are exceptional electron configurations?

A

When the outer D sub-level takes an electron from the nearest S sub-level. Only happens when the D sub-level has either 4 or 9 electrons.

37
Q

What are excited electron configurations?

A

When an electron is found out of order (Ex: 1S2 3S1 2S1)

Chemistry honors (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions