Materials and Change: Chemistry in Action · Physical Science

Mixing and Separating

Using scientific techniques like filtering and sieving to separate mixtures and solutions.

Key Questions

  1. 1How can we recover salt once it has dissolved in water?
  2. 2What is the best way to clean dirty water using only natural materials?
  3. 3Why do some substances disappear when mixed with water while others do not?

NCCA Curriculum Specifications

NCCA: Primary - MaterialsNCCA: Primary - Materials and Change
Class/Year: 4th Class
Subject: Exploring Our World: Scientific Inquiry and Discovery
Unit: Materials and Change: Chemistry in Action
Period: Physical Science

Suggested Methodologies

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Identifying the characteristics of solids, liquids, and gases and observing how substances transition between them.

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Observing the reversible and irreversible changes that occur when materials are exposed to temperature changes.

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