Atoms Flashcards

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1
Q

Define atom

A

Consists of a cluster of protons and neutrons surrounded by a cloud of electrons

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2
Q

Define compound

A

A pure substance that us made up of two or more different types of atoms chemically joined

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3
Q

Define element

A

A substance made up of only one type of atom

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4
Q

Define electron shell

A

Part of the electron cloud, a layer that surrounds the nucleus and can only hold a certain of electrons

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5
Q

Define electron configuration

A

The number of electrons in each of the electron shells of an atom

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6
Q

Define crystal lattice

A

A grid like structure of atoms and ions where each particle is bonded to all of its neighbouring atoms

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7
Q

Define atomic number

A

The number of protons in a nucleus

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8
Q

Define electron

A

A small negatively charged particle that creates a cloud of electrons surrounding a nucleus

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9
Q

Define isotopes

A

Atoms that have the same number of protons but a different number of neutrons

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10
Q

Define mass number

A

The number of protons and neutrons in an atom

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11
Q

Define neutral

A

No over all charge

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12
Q

Define neutron

A

A particle with no electrical charge found in the nucleus of an atom

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13
Q

Define nucleus

A

A cluster of neutrons and protons at the centre of an atom

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14
Q

Define proton

A

A positively charged particle in the nucleus

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15
Q

What are the first 20 elements

A
Hydrogen 
Helium 
Lithium
Beryllium
Boron
Carbon
Nitrogen
Oxygen
Fluorine 
Neon 
Sodium 
Magnesium
Aluminium
Silicon 
Phosphorus 
Sulfur
Chlorine 
Argon
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16
Q

Symbol hydrogen

A

H

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17
Q

Symbol helium

A

He

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18
Q

Symbol lithium

A

Li

19
Q

Symbol beryllium

A

Be

20
Q

Symbol boron

A

B

21
Q

Symbol carbon

A

C

22
Q

Symbol nitrogen

A

N

23
Q

Symbol oxygen

A

O

24
Q

Symbol fluorine

A

F

25
Q

Symbol neon

A

Ne

26
Q

Symbol sodium

A

Na

27
Q

Symbol magnesium

A

Mg

28
Q

Symbol aluminium

A

Al

29
Q

Symbol silicon

A

Si

30
Q

Symbol phosphorus

A

P

31
Q

Symbol Sulfur

A

S

32
Q

Symbol chlorine

A

Cl

33
Q

Symbol argon

A

Ar

34
Q

Symbol potassium

A

K

35
Q

Symbol calcium

A

Ca

36
Q

Period

A

Rows and tells us how many electron shells it has

37
Q

Group

A

Tells us how many electrons in its outer shell

Vertical

38
Q

Group 1 elements?

A

All react in / with water

39
Q

Noble gases

A

Had a full outer electron shell and can’t bond with other atoms. Helium to radon

40
Q

Where are the non metals

A

Step formation from boron to ununoctium

41
Q

How to calculate neutrons

A

Mass no. - atomic no.

42
Q

Placement of electron shells

A
1st = 2 electrons 
2nd = 8 electrons 
3rd = 8 for the first 20 elements
43
Q

What make crystal lattices

A

Made up of carbon and copper

44
Q

What make crystal lattices

A

Made up of carbon and copper