3.2 The Reactivity Series & Displacement Reactions Flashcards
If you react a metal with an acid, what will it form?
A salt and hydrogen gas
When you are carrying out a test to compare the reactivity of different metals, what 2 things should you keep the same throughout your tests?
- Same mass/surface area
- Same type/concentration
How can you measure the reactivity of a metal? (2)
- By seeing how much it fizzes/bubbles
- Measuring the temperature change
Which metals react explosively when put in acid or water? (3)
Potassium, sodium, calcium
Which metals fizz vigorously when they react with acid/water? (2)
Magnesium and aluminium
Which metals bubble a bit when they react with acid/water? (3)
- Zinc, Iron, Lead
Which metals will not react with dilute acids at all? (2)
Copper and silver
Describe the displacement reaction for Magnesium + Iron Sulfate and why it does this
Magnesium + Iron Sulfate —> Magnesium Sulfate + Iron
The magnesium displaces the iron because magnesium is more reactive than the iron. If we added copper to iron sulfate, nothing would happen because it is less reactive
Which factor determines the reactivity of a metal?
How easily the atoms of that element lose their outer electrons
Which group of metals are the most reactive?
Group 1
What is the general word equation for the reaction between a metal and an acid?
Metal + acid —> salt + hydrogen
What is the word equation for the reaction between magnesium and hydrochloric acid?
Magnesium + hydrochloric acid —> magnesium chloride + hydrogen
Sodium reacts with water to produce sodium hydroxide and a gas. What is the name of the gas produced?
Hydrogen
What is halogen displacement?
When a move reactive halogen displaces a less reactive slogan from solutions of its salts. E.g. chlorine is more reactive than iodine. A solution of chlorine can displace iodine from potassium iodine solution
What is the halogen displacement reaction for chlorine and potassium iodide?
Chlorine + potassium iodide —> potassium chloride + iodine
