Mark Levesley, Chris Meunier, Fran Eardley and, Gemma Young Solutions for Exercise 4: Exercise 4

Author:Mark Levesley, Chris Meunier, Fran Eardley & Gemma Young

Mark Levesley Science Solutions for Exercise - Mark Levesley, Chris Meunier, Fran Eardley and, Gemma Young Solutions for Exercise 4: Exercise 4

Attempt the practice questions from Exercise 4: Exercise 4 with hints and solutions to strengthen your understanding. Cambridge Lower Secondary Science Stage 7 : Student's Book solutions are prepared by Experienced Embibe Experts.

Questions from Mark Levesley, Chris Meunier, Fran Eardley and, Gemma Young Solutions for Exercise 4: Exercise 4 with Hints & Solutions

EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 7 - Acids and Alkalis>Exercise 4>Q 10

For the following statement, say whether it is true or false. If it is false, write the correct answer.

A strong acid has a pH range of 4-6.

EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 7 - Acids and Alkalis>Exercise 4>Q 10

For the following statement, say whether it is true or false. If it is false, write the correct answer.

A weak alkali has a pH range of 8-10.

EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 7 - Acids and Alkalis>Exercise 4>Q 10

For the following statement, say whether it is true or false. If it is false, write the correct answer.

A neutral substance turns universal indicator green.

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 7 - Acids and Alkalis>Exercise 4>Q 11

Give an example of a strong acid, weak acid, strong alkali and a weak alkali.

HARD
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 7 - Acids and Alkalis>Exercise 4>Q 12

Draw and colour in your own pH scale and label each pH value with an example.

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 7 - Acids and Alkalis>Exercise 4>Q 13

Find the names of at least two indicators that scientists use. (You can use any books or Internet)

EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 7 - Acids and Alkalis>Exercise 4>Q 14

Why is universal indicator more useful than other indicators?

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 7 - Acids and Alkalis>Exercise 4>Q 15

What is a disadvantage of using litmus indicator?