Natural Sciences and Technology Grade 6 Term 2: Matter and Materials Mixtures

Mixtures of Materials (1) Topic 2 Mixtures Mixtures of Materials (1) Gr 6 Natural Sciences and Technology – Term 2, Topic 2

What is a mixture? A mixture consists of at least two or more different materials mixed together. Gr 6 Natural Sciences and Technology – Term 2, Topic 2

Examples of mixtures Solid substances (e.g. peanuts and raisins) A mixture can consist of: Solid substances (e.g. peanuts and raisins) Solid and liquid substances (e.g. cup of coffee) Liquid substances (concentrated cool drink and water) Gr 6 Natural Sciences and Technology – Term 2, Topic 2

Mixing Solids What examples can learners provide? In some mixtures of solids the different substances are still clearly visible after mixing. What examples can learners provide? peanuts and raisins dried fruit different coloured or types of sweets sugar and cinnamon mix Gr 6 Natural Sciences and Technology – Term 2, Topic 2

Separating substances in a mixture How can these substances be separated? peanuts and raisins dried fruit different coloured or types of sweets sugar and cinnamon mix Gr 6 Natural Sciences and Technology – Term 2, Topic 2

Mixing solids The bigger the particles of materials are in the mixture the easier it is to separate them out. e.g. rice and peas The smaller the particles of materials are in the mixture the more difficult it is to separate them out. e.g. sand and sugar Gr 6 Natural Sciences and Technology – Term 2, Topic 2

Mixing Liquids In certain mixtures, the materials are mixed so well together that we cannot see the different materials after mixing. Such mixtures are called “solutions”. This happens especially when liquids are mixed. What examples can learners provide? cup of coffee milkshake concentrated cool drink and water custard Gr 6 Natural Sciences and Technology – Term 2, Topic 2