logo

Learning objective

Recognize that distilled water is preferred in practical chemistry over tap water due to its lower levels of chemical impurities.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Combined Scienceof the environmentCore content

Study support

Understand this objective

Quick explanation

Recognize that distilled water is preferred in practical chemistry over tap water due to its lower levels of chemical impurities

  • This point belongs to Water, especially Water outcomes.
  • You need to be able to recognize that distilled water is preferred in practical chemistry over tap water due to its lower levels of chemical impurities.
  • The key ideas to know are State and Identify.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

StateIdentify

Why it matters

This objective helps connect Water outcomes to exam-style questions, flashcards, and revision notes for Water.

Revision tools

Choose how to practise

Back to topic hub
Flashcards10 linked cards

Flashcard 1 of 10

Press Space to flip, arrows to move
Practice Questions7 linked questions

Question 1 of 7

Choose an answer, get feedback, then move sideways through the set.

0 of 5 attempted

Paper 3 structured question: Water

Paper 3Theory (Core)2 marks

Description

Use of Water in Experiments

The students have access to both tap water and distilled water for their experiments. They need to choose which type of water to use for accurate results.

  1. a

    Explain why distilled water is preferred over tap water in laboratory experiments.

    Aim for approximately 2 distinct marking points.

    [2]
Revision notestopic notes

Open the full topic revision notes when you are ready to review this objective in context.

Open revision notes

Related learning objectives

Revision hubs

Move back to a broader study route