Chemistry | Y9 periodic table (basics, group 1, 0)

Question 1

how was the periodic table arranged in the 1800’s?

Answer 1

In the Early 1800s Elements Were Arranged By Atomic Weight

Question 2

what did dmitri do?

Answer 2

Dmitri Mendeleev Left Gaps and Predicted New Elements

Question 3

Group 1 metals are _____ , ______ metals…

Answer 3

reactive, soft

Question 4

Group 1 metals are…

Answer 4

alkali

Question 5

how many electrons to group one have in there outershell.

Answer 5

They all have one electron in their outer shell

Question 6

Having one electron in their outer shell makes them ….
Group 1

Answer 6

one electron in their outer shell which makes them
very reactive and gives them similar properties.

Question 7

They are ___ and low ____

Answer 7

The alkali metals are all soft and have low density.

Question 8

The trends for the alkali metals as you go down Group 1 include:

Answer 8

Increasing reactivity - the outer electron is more easily lost as the attraction between the nucleus and electron decreases,

because the electron is further away from the nucleus the further down the group you go.

Lower melting and boiling points.

Question 9

Group one metals have ___ atomic mass?

Answer 9

Higher relative atomic mass.