Metals And Ractivity Flashcards
Displacement reactions
What happens
More reactive element displaces a less reactive element from its compound.
Reactivity
All metals tarnish in air- how do they prevent this
Store metals in oil so no reactions can occur
Example of displacement reactions
Zinc + copper sulphate — ?
Zinc sulphate + copper
Neutralisation
What is it?
When the ph neutralises and changes closer to neutral (7)
Salts
How to make salts
Acid+base—–> salt + water
Acid + alkali ——> salt +water
Acid + metals —-> salt + hydrogen
Acid+ carbonate —–> salt + water + carbon dioxide
In a chemical reaction is any mass ever lost ?
No
Name some noticeable chemical reactions
Temperature change
Colour
Size
Energy given off
Say the song of the most and least reactive metals
Platinum Gold silver Copper lead Tin Iron Zinc Aluminium Magnesium Calcium Sodium Pottasium
Order of reactivity with water
K. —— most
Na
Li
Ca. —— least
how well does metal react
State different sections and how reactive
Most reactive metals???
K Na Ca. ------ very reactive Mg Al
Font very reactive
Zinc
Iron
Lead
Copper
Not reactive
Silver
Gold
Reaction of metals with oxygen
Same as the song but Al down one section. Silver + gold in last section. Copper + lead up 1 section
Reaction with water
Magenesium and Al down 1 section
Reaction with dilute acid
Mg and aluminium down 1
