Topic 6 - Reactivity of metals and equilibrium (Year 10) Flashcards
Which two non-metals are often included in the reactivity series?
Carbon and hydrogen
Potassium is at the top of the reactivity series. Explain why.
It is one of the more reactive metals
Gold is at the bottom of the reactivity series. Explain why.
It is one of the least reactive metals
Calcium is less resistant to oxidation than zinc. What does this tell you about the relative positions of calcium and zin in the reactivity series?
Calcium is higher in the reactivity series than zinc
What would you expect to see when you react an alkali metal with water?
Bubbling/fizzing, metal floating and moving, the metal turning into a ball. (lilac flame - potassium only)
What colour would universal indicator turn the water where an alkali metal has reacted?
Purple - Alkali due to the metal hydroxide being made.
What are the products of the reaction between a metal ad water?
metal hydroxide and hydrogen
How do you test for hydrogen?
Get a light splint and place it into a test-tube of hydrogen gas. It will burn with a squeeky pop. (Squeeky pop test)
Do potassium , sodium and calcium react with water?
Yes, very easily
Do magnesium, lithium, zinc and iron react with water?
Yes, but very slowly, if at all. They all react with steam to produce a metal oxide and hydrogen.
Do copper, silver and gold react with water?
No, these metals are unreactive and don’t react with water or steam
In terms of electrons, What is meant by oxidation?
Loss or electrons
In terms of electrons, What is meant by reduction?
Gain of electrons
In terms of oxygen, what is meant by oxidation?
Gaining of oxygen
In terms of oxygen, what is meant by reduction?
Loss of oxygen
What are the prodcuts of a reaction between a metal and an acid?
Salt and hydrogen
Do potassium and sodium react with acid?
Yes, violently.
Do copper, silver and gold react with acid?
No, they are unreactive
Define: Displacement reaction
When a more reactive element (metal or halogen) takes the place of a least reactive element
What sort of reaction occurs when zinc is added to a solution of copper chloride?
Displacement reaction
What are the prodcuts of the reaction that occurs when zinc is added to a solution of copper chloride?
Zinc chloride and copper
What are the products of a displacement reaction between magnesium and zinc sulfate?
Magnesium sulfate and zinc
Why will a reaction not occur between magnesium sulfate and zinc?
zinc is less reactive than magnesium
What would you see if you placed an iron nail into copper sulfate solution?
Copper is displaced from the blue copper sulfate solution. Red/Orange solid appears on the nail and the solution changes from a blue colour to colourless.
what does a half equation show us?
Half equations show what happens to an element in terms of electrons
Is the following equations oxidation or reduction:
Mg2+ + 2e- → Mg
Reduction
Is the following equations oxidation or reduction:
Cu → Cu2+ + 2e-
Oxidation
Is the following equations oxidation or reduction:
K+ + e- → K
Reduction
Is the following equations oxidation or reduction:
Na → Na+ + e-
Oxidation
How can you remember whether oxidation or reduction is loss or gaining of electrons?
OIL RIG (oxidation is loss, reduction is gain)
True or False: A metal ore is any rock which contains a metal compound?
False, A metal ore is a rock which contains enough metal to make it economically worthwhile extracting the metal from it.
Define: Native metal
A metal which is found in its natural state e.g. gold
What are the two way of extracting a metal from its ore
displacement with carbon or extracting metals
Where would you find native metals on the reactivity series?
At the bottom, native metals are extrememly unreactive.