Metals and Acids Lesson 2

Observe and Explain reactions of metals with acid Learning Objectives: In order to be successful in this lesson you must be able to: Observe and Explain reactions of metals with acid Success…

Reaction of metals with acids Many metals react with acids. When this happens the metal fizzes as bubbles are produced. hydrogen burning splint What do the bubbles mean? magnesium + acid A gas is produced. How can you test to find out if the gas produced is hydrogen? Place a burning splint next to the mouth of test tube. A ‘squeaky pop’ as the gas ignites shows that hydrogen is the gas produced in this reaction.

You will collect 3 test tubes of gas and test them for hydrogen gas Making Hydrogen You are going to be making hydrogen from granulated zinc, hydrochloric acid and copper sulphate solution You will need to label the diagram on the sheet before doing the practical You will collect 3 test tubes of gas and test them for hydrogen gas Once you have finished the practical, answer the questions in your book in full sentences

Diagram Delivery Tube Test - Tube Thistle Funnel Gas (hydrogen) Bubbles of gas Conical Flask Water Tub / Trough Granulated Zinc Hydrochloric acid & Copper sulphate solution

Reaction of metals with acids When a metal reacts with an acid, the products are a salt and hydrogen gas. metal acid sulfuric acid hydrochloric acid nitric acid metal chloride metal sulfate metal nitrate salt hydrogen The salt produced depends on the metal and type of acid involved in the reaction: When a metal reacts with hydrochloric acid, the salt produced is a metal chloride. When a metal reacts with sulfuric acid, the salt produced is a metal sulfate. When a metal reacts with nitric acid, the salt produced is a metal nitrate.

Complete the word equations Complete the word equations for metals reacting with acid: magnesium nitric acid ? magnesium nitrate hydrogen iron sulfuric acid ? iron sulfate hydrogen zinc hydrochloric acid zinc chloride ? hydrogen ? lead sulfuric acid ? lead sulfate hydrogen

increasing reactivity Reactivity of metals Some metals react more vigorously with acids than others. Metals can be listed in order of how reactive they are. This list is called the reactivity series. potassium sodium calcium magnesium aluminium zinc iron lead (hydrogen) copper silver gold The more reactive the metal, the more vigorous the reaction. increasing reactivity A metal that is below hydrogen will not react with dilute acids.