Unit 1 - Part 2 - Atomic Structure Flashcards Preview

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Flashcards in Unit 1 - Part 2 - Atomic Structure Deck (30)
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1
Q

Which sub-atomic particle has almost no mass?

A

Electron

2
Q

Which sub-atomic particle has a positive charge?

A

Proton

3
Q

Which sub-atomic particles have a mass of one?

A

Proton and neutron

4
Q

What is an electrons charge?

A

Negative

5
Q

Which sub-atomic particle has a neutral charge?

A

Neutron

6
Q

Where would you find a proton?

A

In the neucleus

7
Q

Where would you find an electron?

A

In the energy levels

8
Q

Where would you find a neutron?

A

In the neucleus

9
Q

What is the atomic number?

A

The number of protons in an atom

10
Q

How do you find out the mass number of an atom?

A

Number of protons add the number of neutrons

11
Q

How do you find out the number of neutrons?

A

Mass number minus the number of protons

12
Q

How many electrons can the first energy level hold?

A

2 electrons

13
Q

How many electrons can all but the first energy level hold?

A

8 electrons

14
Q

What is the electron arrangement for oxygen?

A

2,6

15
Q

What is the electron arrangement for lithium?

A

2,1

16
Q

What is the electron arrangement for krypton?

A

2,8,8,8

17
Q

What is the definition of an isotope?

A

An isotope is a defined as two or more atoms with the same atomic number but different mass number

18
Q

What is neuclide notation?

A

When you have the mass number on top of the attic number and the element symbol to the right

19
Q

What is relative atomic mass?

A

The relative atomic mass is the average mass of all isotopes of an element

20
Q

Why do atoms form covalent bonds?

A

To get a full outer shell

21
Q

What effects whether an atom will gain or lose electrons when bonding?

A

The number of electrons

22
Q

In general, do metals gain or lose electrons?

A

Metals usually lose electrons and non-metals gain electrons

23
Q

Does hydrogen gain or lose electrons?

A

Hydrogen loses electrons

24
Q

What is a molecule?

A

When 2 or more non-metal atoms join together by covalent bonds

25
Q

Do covalent substances have low or high melting and boiling points?

A

They have low melting and boiling points

26
Q

Do covalent substances dissolve in non-aqueus solutions?

A

Yes they do

27
Q

Do covalent substances dissolve in non-aqueus solutions?

A

Yes they do

28
Q

Do covalent substances conduct electricity?

A

Covalent substances don’t conduct in any state

29
Q

What is an intramolecular bond?

A

A covalent bond that is inside each molecule. They are very strong

30
Q

What is an intermolecular bond?

A

They are covalent bonds that are weak and are attractive forces. They break at low temperatures