Aidan Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Acids and Alkalis, Exercise 2: Exercise 2

Author:Aidan Gill, Heidi Foxford & Dorothy Warren

Aidan Gill Science Solutions for Exercise - Aidan Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Acids and Alkalis, Exercise 2: Exercise 2

Attempt the free practice questions on Chapter 7: Acids and Alkalis, Exercise 2: Exercise 2 with hints and solutions to strengthen your understanding. Cambridge Lower Secondary Science Stage 7 : Workbook solutions are prepared by Experienced Embibe Experts.

Questions from Aidan Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Acids and Alkalis, Exercise 2: Exercise 2 with Hints & Solutions

EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 7 - Acids and Alkalis>Exercise 2>Q 2

Name the salt produced when hydrochloric acid reacts with sodium hydroxide.

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 7 - Acids and Alkalis>Exercise 2>Q 3

In areas of hard water, limescale is deposited inside kettles when the water is boiled. Vinegar or lemon juice can be used to remove the limescale. What does this tell us about the limescale? 
 

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 7 - Acids and Alkalis>Exercise 2>Q 4

John has just been stung by a bee. He wants to put some vinegar (mild acid) on it to ease the pain but his Mum says no, that will make it worse. She says he should use baking powder (mild alkali). 
Explain why Mum is correct. 

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 7 - Acids and Alkalis>Exercise 2>Q 5

If alkali A has a pH value of 13 and alkali B has a pH value of 9, explain which is most likely to be used in indigestion tablets as a remedy for excess stomach acid.