Reactivity across period table Flashcards
Define alkaline
A solution with a Ph above 7
Define oxidation
LOss of electrons to form an atom
Define Allotrope
Two or more different physical forms that an element can exist in. E.g. Graphite and diamond are carbon allotropes.
Define Amphoteric
Substances that can act as both acids and bases.
Define Base
Cannot dissolve in water
Define Alkali
Base can dissolve in water
What solution do group one elements create when the product is dissolved in water.
It produces an alkaline solution.
When aluminium reacts with oxygen it creates an ______ substance
Amphoteric substance
2C (s) + O₂ (g) —> 2CO (g) is an example of what type of combustion?
Incomplete combustion
Incomplete combustions is when soot is produced.
How do group 7 elements react with oxygen?
They have vigorously react but form unstable oxides.
What are the three patterns across the periodic table for reactions with oxygen?
1- Products change from solids to gases as you go across the period.
2-As you go along the period table the products go from alkaline, amphoteric to acids.
3- Ionic to giant covalent to small covalent.
What causes the three patterns across the periodic table?
All due to changes in bonding across the period
Na₂O₂ (s) has a _______ structure
Crystalline
Write and balance the equation for
1 - 2Li₂O (s)
2- 2Al₂O₃ (g)
3- 2BeO (s)
1- 4Li (s) + O₂ (g) —-> 2Li₂O (s)
2-4Al (s) + 3O₂ (g) —-> 2Al₂O₃ (g)
3-2Be (s) + O₂ (g) —-> 2BeO (s)
What are O₂ & O₃ ?
Allotropes of Oxygen
When the equation for phosphorus is P₄O₁₀ (s) there is lots of _____ to burn
Oxygen
What’s the most reactive in the reactivity series?
Potassium
K
What’s the least reactive in the reactivity series?
Platinum
List of most to least reactive groups across the periodic table.
Group 1 Group 2 Group 3 Group 4 Transition metals
Define displacement reaction
A chemical reaction in which a more reactive element displaces a less reactive element from its compound
Reactivity series list
Potassium, Sodium, Calcium, Magnesium, Aluminium, Carbon, Zinc, Iron, Tin, Lead, Hydrogen, Copper, Silver, Gold, Platinum
Displacement reaction
1 )Iron + copper sulphate ->
2)Copper + magnesium sulphate ->
3)Calcium + iron sulphate ->
1) -> Iron sulphate + copper
2) ->Magnesium sulphate +copper
3) -> Calcium sulphate + iron
