Section 1 Introduction
Completion requirements
Targets
At the end of this Unit you should be able to answer the following questions
1. What are the properties of pure substances and mixtures?
1.1 What are the properties of water?
1.2 How can mixtures be identified?
1.3 How can mixtures be separated?
Unsplash- gas steam
Water can be a gas (steam or water vapour), a liquid, or a solid (ice).
Matter is anything that has mass and takes up space.
Solid matter is dense and holds its shape. Mass is measured in grams (g) and kilograms (kg).
Liquid flows, pours, and takes the shape of the container. Measuring containers are marked to show volume. The units mililetre (mL) and litre (L) measure capacity.
Gas molecules spread out and fill up all the space in a container.
What is in between the solid, liquid, and gas particles? Did you know it isn't air? The correct answer is nothing because the particles are simply moving farther apart.
Chemistry is the study of matter and the ways it can be changed.
Solid matter is dense and holds its shape. Mass is measured in grams (g) and kilograms (kg).
Liquid flows, pours, and takes the shape of the container. Measuring containers are marked to show volume. The units mililetre (mL) and litre (L) measure capacity.
Gas molecules spread out and fill up all the space in a container.
What is in between the solid, liquid, and gas particles? Did you know it isn't air? The correct answer is nothing because the particles are simply moving farther apart.
Chemistry is the study of matter and the ways it can be changed.
Pixabay - Solid iceberg
Pixabay- liquid water
