Topic 4- Periodic Table

Question 1

Who suggested the idea of the law of octaves

Answer 1

John Newlands

Question 2

What are the differences between Mendeleev’s periodic table and the modern one ☝️ (5)

Answer 2

Arranged in increasing atomic mass
No noble gases
No block of transition metals
Fewer elements because of gaps

Question 3

What is diatomicity

Answer 3

When two of the same elements are bonded together in a covalent bond

Question 4

What are some of the feature of group one element (6)

Answer 4

Tarnishes easily 
Reactive, down the group >
Easy to cut 
One electron in outer shell
Stored under oil, oxygen, moisture can't get in
Low melting points decrease down

Question 5

Give some observations of the group one elements reacting with water (4)
What is the chemical equation

Answer 5

Floats on surface
Moves on surface
Gives off gas
Eventually disappears

Metal + water-> salt + hydrogen

Question 6

How do you form a halide

Give example of halide

Answer 6

By reacting a halogen with an alkali metal

Fluoride, chloride,

Question 7

What colour is... and what state are they at room temperature 
Fl
Cl
Br 
I

Answer 7

Pale yellow gas
Yellow, green gas
Brown liquid
Grey, purple solid

Question 8

In order of most reactive name three most reactive non metal from group 7
Give an example of a displacement reaction

Answer 8

Fl
Cl
Br 
I 
Cl2 + 2NaI -> 2NaCl + I2

Question 9

What are some similarities that group 0 have (3)

Answer 9

All colourless at room temp
Un reactive
Full outer shell