Solutions and Mixtures
The properties of matter. States, density, surface tension, solubility, particle theory — and how we separate mixtures in science and industry.
Lessons
11 totalStates of matter
Solid, liquid and gas — and where water fits in all three.
Changes of state
Melting, boiling, condensing and the energy behind each change.
Particle theory
Explain the behaviour of matter using tiny moving particles.
Properties of water — density and buoyancy
Why things float or sink, and what makes water special.
Surface tension and density calculations
Calculate density and discover the skin on water.
Dissolving — solute, solvent, solubility
What dissolves in water, and how do we describe it?
Factors affecting solubility
Temperature, stirring and particle size — what matters?
Types of solutions
Dilute, concentrated, saturated — and the supersaturated surprise.
Pure substances and mixtures
Atoms, compounds and mixtures — classifying matter.
Separating mixtures — techniques
Use physical properties to pull a mixture apart.
Water purification in context
Model water pollution and design a solution to clean it up.
Syllabus Outcomes
- SC4-SOL-01 Explains how the properties of substances enable separation in a range of techniques