Elements, Compounds And Mixtures Flashcards Preview

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Flashcards in Elements, Compounds And Mixtures Deck (40):
1

What are the 6-10 elements

6. Carbon
7. Nitrogen
8. Oxygen
9. Fluorine
10. Neon

2

What are the 11-15 elements

11. Sodium
12. Magnesium
13. Aluminium
14. Silicon
15. Phosphorus

3

What are the 16-20 elements

16. Sulfur
17. Chlorine
18. Argon
19. Potassium
20. Calcium

4

What is the symbol for hydrogen

H

5

What is the symbol for helium

He

6

What is the symbol for lithium

Li

7

What is the symbol for beryllium

Be

8

What is the symbol for boron

B

9

What is the symbol for carbon

C

10

What is the symbol for nitrogen

N

11

What is the symbol for oxygen

O

12

What is the symbol for fluorine

F

13

What is the symbol for neon

Ne

14

What is the symbol for sodium

Na

15

What is the symbol for magnesium

Mg

16

What is the symbol for aluminium

Al

17

What is the symbol for silicon

Si

18

What is the symbol for phosphorus

P

19

What is the symbol for Sulfur

S

20

What is the symbol for chlorine

Cl

21

What is the symbol for Argon

Ar

22

What is the symbol for potassium

K

23

What is the symbol for calcium

Ca

24

How many naturally occurring elements are there

92

25

List 2 examples of compounds

Water= hydrogen + oxygen
Table salt= sodium + chlorine

26

What is an element

A pure substances made up of one kind of atom

27

What is an atom

An atom is made up of 3 sub atomic particles, protons, neutrons and electrons

28

What does an electron do

Electrons orbit the nucleus which is located at the centre of the atom and houses the protons and neutrons

29

What charge do protons have

Positive

30

What charge does electrons have

Negative

31

What charge does neutrons have

Neutral

32

What is the atomic number related to

The number of protons = the atomic number

33

How can u find the number of neutrons

Mass number- atomic number = number of neutrons

34

How can u find the mass number

The sum of protons and neutrons

35

How many electrons can each electron shell hold

1- a max of 2
2- a max of 8
3- a max of 8

36

What 2 elements have electrons in the 4th shell

Potassium and calcium

37

Describe a compound

More than one element makes a compound. In compounds the atoms of one element are bonded very tightly

38

Describe a mixture

Mixtures can be made up of 2 or more elements or compounds. The substances that make up mixtures can be usually be easily separated

39

When creating a compound what are the 2 elements called

They are called reactants and they produce a product

40

What are the first five elements.

1. Hydrogen
2. Helium
3. Lithium
4. Beryllium
5. Boron