Chemical reactions: neutralisation
Lesson 1 / 7
Lesson video
Lesson slides
Lesson details
Lesson outcome
Waxaan qeexi karaa waxa dhacaya inta lagu jiro falcelinta dhexdhexaadinta waxaana u qori karaa isla'egyo erayo iyo calaamado ah oo matalaya falcelinno kala duwan oo dhexdhexaadin ah.
Introduction
In this lesson: I can describe what happens during a neutralisation reaction and write word and symbol equations to represent different neutralisation reactions. Neutralisation reaction general equation is: base + acid → metal salt + water. Sodium hydroxide has the formula NaOH(aq) and hydrochloric acid has the formula HCl(aq).
Show transcript
Worksheet
not available yet
Quizzes
1. What colour does universal indicator turn when a solution is neutral?
- Correct answer:green
- yellow
- blue
- orange
- red
2. Which of the following is the name of the metal salt that is formed when sodium hydroxide reacts with nitric acid?
- Correct answer:sodium nitrate
- sodium nitrogen
- nitric hydroxide
- nitrogen oxide
- sodium nitride
3. Which of the following statements about bases and alkalis are correct?
- Correct answer:An alkali is a base that is soluble in water.
- Correct answer:A base is a substance that can react with acid and neutralise it.
- A base is always insoluble.
- An alkali has a pH of less than 7.
1. Sodium hydroxide is an alkali. When it reacts with hydrochloric acid, sodium chloride is formed. Which of the following words can be used to describe sodium chloride?
- element
- Correct answer:compound
- mixture
- base
- Correct answer:metal salt
2. Which of the following is the correct meaning of the state symbol (aq) in a chemical equation?
- It stands for 'aqua' which means water.
- Correct answer:It stands for 'aqueous' which means a substance is dissolved in water.
- It means the same as liquid (l).
3. Which of the following chemicals could be used to neutralise an acid?
- Correct answer:copper oxide
- Correct answer:sodium hydroxide
- sodium chloride
- phosphorus oxide
4. In a neutralisation reaction, the metal salt produced is named after the metal (base) and the acid used. What is the name and chemical formula of the metal salt formed when nitric acid is used?
- Correct answer:metal nitrate (NO₃)
- metal nitric (HNO₃)
- metal nitrous (N₂O)
- metal nitrogen (N₂)
5. Use the general equation base + acid → metal salt + water to select the correct chemical equation for the reaction between sodium hydroxide and hydrochloric acid.
- NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(aq)
- Correct answer:NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l)
- NaOH(aq) + HCl(aq) → NaCl(s) + H₂O(l)
- NaOH(aq) + HCl(l) → NaCl(aq) + H₂O(aq)
What pupils see
The same lesson as a pupil sees it. You can set any section as work on its own.
- IntroductionPrepare
- Starter quizActivate · 3 questions
- Lesson videoLearn
- Exit quizCheck · 5 questions