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Flashcards in Atoms Deck (44):
1

Define atom

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

2

Define compound

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

3

Define element

A substance made up of only one type of atom

4

Define electron shell

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

5

Define electron configuration

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

6

Define crystal lattice

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

7

Define atomic number

The number of protons in a nucleus

8

Define electron

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

9

Define isotopes

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

10

Define mass number

The number of protons and neutrons in an atom

11

Define neutral

No over all charge

12

Define neutron

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

13

Define nucleus

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

14

Define proton

A positively charged particle in the nucleus

15

What are the first 20 elements

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

16

Symbol hydrogen

H

17

Symbol helium

He

18

Symbol lithium

Li

19

Symbol beryllium

Be

20

Symbol boron

B

21

Symbol carbon

C

22

Symbol nitrogen

N

23

Symbol oxygen

O

24

Symbol fluorine

F

25

Symbol neon

Ne

26

Symbol sodium

Na

27

Symbol magnesium

Mg

28

Symbol aluminium

Al

29

Symbol silicon

Si

30

Symbol phosphorus

P

31

Symbol Sulfur

S

32

Symbol chlorine

Cl

33

Symbol argon

Ar

34

Symbol potassium

K

35

Symbol calcium

Ca

36

Period

Rows and tells us how many electron shells it has

37

Group

Tells us how many electrons in its outer shell
Vertical

38

Group 1 elements?

All react in / with water

39

Noble gases

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

40

Where are the non metals

Step formation from boron to ununoctium

41

How to calculate neutrons

Mass no. - atomic no.

42

Placement of electron shells

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

43

What make crystal lattices

Made up of carbon and copper

44

What make crystal lattices

Made up of carbon and copper