9F: REACTIVITY & ELEMENTS, COMPOUNDS, MIXTURES, POLYMERS

How do we increase air pressure?

• Increase the number of particles/gas in a container

• Decreasing the size of the container

• Increasing the temperature

• Cooling the gas down

• Increase the volume of container

What is a reactivity series?

• A list of metals arranged in order of their reactivity

• The speed of a reaction cost by a chemical product

• A list of elements with their mass and atomic number

• A list in which people see the price of each element

Halogens are metals.

• True

• False

Where in the periodic table are halogens found?

• Group 4

• Group 7

• Group 8

• Group 5

Which elements below are the most reactive?

• Gold

• Silver

• Caecium

• Lithium

The group in periodic tables with the most reactive alkali metals are…

• Group 1

• Group 7

• Group 5

• Group 4

Metals in group 1 are increasingly reactive going down the group

• True

• False

Elements in group 7 are increasingly reactive going down the group

• True

• False

What is the number of protons in potassium?

• 39

• 19

• 20

• 58

What is the number of neutrons in potassium?

• 39

• 19

• 20

• 58