Unit 3- The Periodic Table

Question 1

Who invented the law of octaves?

Answer 1

Newlands

Question 2

What was the law of octaves?

Answer 2

Noticed every eighth element was similar so put them into columns of 7

Question 3

What did Mendeleev do?

Answer 3

Left gaps to predict new elements

Question 4

What 3 factors do transition metal have?

Answer 4

Less reactive than group 1
High melting points
Good conductors

Question 5

Where are the alkali metals?

Answer 5

In group 1

Question 6

As you go down group 1 ……….

Answer 6

They get more reactive

Question 7

Alkali metals only form which bond?

Answer 7

Ionic

Question 8

What do the first 3 alkali metals react with water to make?

Answer 8

Hydroxides

Question 9

What do hydroxides dissolve in water to make?

Answer 9

Alkali solution

Question 10

As you go down group 7 ………..

Answer 10

They get less reactive

Question 11

What are group 7 elements called?

Answer 11

Halogens

Question 12

What do halogens bond with metals creating a -1 ion make?

Answer 12

Halides

Question 13

What could they organise the elements into in the early 1800’s?

Answer 13

Atomic mass and physical appearance