Science 24

Unit 1: Applications of Matter & Chemical Change

How the materials and energy we rely on every day come from chemical reactions — classifying those reactions, understanding why mass is conserved when we balance them, and weighing the environmental cost of the products and processes we use at home and on the job.

• Technology behind everyday materials and energy
• Investigating and classifying chemical reactions

• Conservation of mass and balancing reactions
• Analyzing everyday products and processes
• Their effects on the environment

Unit 2: Understanding Common Energy Conversions

Where the energy that runs daily life comes from and where it goes — how energy transforms and is conserved, how electrical devices convert and waste it, how food and fuels store chemical energy, and why fossil fuels still meet so many of our needs.

• Energy transforming from one form to another
• Energy is conserved overall

• Energy conversions in electrical devices
• Rate of energy transfer and efficiency

• Energy conversions in chemical and biological systems
• The impact of fossil-fuel technologies
• Why fossil fuels still meet human needs

Unit 3: Disease Defence & Human Health

What keeps people healthy and what makes them sick — how society and the environment shape health, how pathogens cause disease, how the body defends itself, the role genes play, and why people live far longer today than a century ago.

• Societal and environmental factors in health
• The need for society to act on health
• Human health and environmental pathogens

• Natural defences against pathogens
• Genes, inherited traits and health
• Longer lives from understanding disease
• Longer lives from sanitation and hygiene

Unit 4: Motion, Change & Transportation Safety

The science behind moving safely — telling scientific evidence apart from personal opinion when we judge safety rules, describing motion with numbers and graphs, using momentum to understand collisions, and explaining why seatbelts, airbags and crumple zones save lives.

• Scientific evidence versus personal opinion
• Why we need safety systems and rules

• Position and speed with numbers
• Position and speed with graphs

• Force and mass in a collision
• Conservation of momentum in a collision
• Motion principles behind safety devices