The  Nelson Science & Technolgoy Perspectives 7 - Student Textbook supports The Ontario Curriculum, Grades 7: Science and Technology, 2007

It has these units and chapters:

UNIT A: PURE SUBSTANCES AND MIXTURES

Chapter 1 CLASSIFYING MATTER
1.1 What Is Matter? - Try This: Explain Observations Using the Particle Theory
1.2 More About Matter - Try This: Changes in State
Awesome Science: Other States of Matter
1.3 CONDUCT AN INVESTIGATION: Testing the Particle Theory
1.4 Pure Substances and Mixtures - Try This: Test a Sample of Matter
1.5 PERFORM AN ACTIVITY: Identifying and Classifying Matter
1.6 Mechanical Mixtures and Solutions - Try This: Explore Mixtures at Home
                                                                       - Try This: Make a Mixture
1.7 EXPLORE AN ISSUE CRITICALLY: Using Compact Fluorescent Light Bulbs

Chapter 2 SOLUTIONS
2.1 Solutes and Solvents - Try This: Identify Solutions at Home
2.2 Dissolving and the Particle Theory - Try This: Where Does the Sugar Go?
                                                                      - Try This: Compare Different Solvents
2.3 Concentration and Solubility - Try This: Make a Saturated Solution
Science Works: Pharmaceuticals
2.4 PERFORM AN ACTIVITY: Solubility
2.5 CONDUCT AN INVESTIGATION: Dissolving Solutes Faster

Chapter 3 SEPARATING MIXTURES
3.1 PERFORM AN ACTIVITY: Separating Mechanical Mixtures
3.2 Separating Mechanical Mixtures - Try This: Separate a Mixture by Dissolving
Tech Connect: Sorting Solid Waste
3.3 SOLVE A TECHNOLOGICAL PROBLEM: Separating Recyclables
3.4 Protecting the Environment by Separating Mixtures - Try This: Clean Up an Oil Spill
3.5 Separating Solutions - Try This: Make a Stalactite
3.6 CONDUCT AN INVESTIGATION: Separating a Solution
3.7 Mixtures in Industry
3.8 PERFORM AN ACTIVITY: Separating a Complex Mixture

UNIT B: INTERACTIONS IN THE ENVIRONMENT

Chapter 4 HEALTHY ECOSYSTEMS
4.1 What Is an Ecosystem?
4.2 The Needs of Living Things - Try This: Identify the Best Living Conditions
4.3 PERFORM AN ACTIVITY: Designing Your Own Model Ecosystem
4.4 Interactions among Living Things - Try This: Counting Populations
Awesome Science: Living Walls
4.5 How Do Humans Fit into Ecosystems?
4.6 EXPLORE AN ISSUE CRITICALLY: The Impact of Vehicles on the Environment

Chapter 5 INTERACTIONS WITHIN ECOSYSTEMS

5.1 The Roles of Organisms in an Ecosystem
5.2 Food Chains and Food Webs
Science Works: Bridget Stutchbury— Renowned Ecologist
5.3 PERFORM AN ACTIVITY: The Great Web of Life
5.4 Energy Flow in an Ecosystem - Try This: Dealing Out a Pyramid of Numbers
5.5 Matter Cycles - Try This: Discovering Interactions in a Rotting Log
5.6 CONDUCT AN INVESTIGATION: Breaking Down the Waste Barrier

Chapter 6 ORGANISMS DEPEND ON A HEALTHY ENVIRONMENT
6.1 The Dynamics of Nature: Succession
6.2 Human Impact on Ecosystems - Try This: Protecting Our Natural Heritage for Future Generations
6.3 PERFORM AN ACTIVITY: The Trouble with Invasive Species
6.4 Protecting the Environment - Try This: Determining Your Ecological Footprint
6.5 Traditional Knowledge and Stewardship of Earth
6.6 EXPLORE AN ISSUE CRITICALLY: Potential Solutions to Traffic

UNIT C: HEAT IN THE ENVIRONMENT

Chapter 7 HEATING AND COOLING
7.1 Warmth and Coldness - Try This: Conduct a Heating and Cooling Survery
7.2 Explaining Hot and Cold
7.3 Kinetic Energy, Heat, and Temperature
7.4 CONDUCT AN INVESTIGATION: Expanding and Contracting
7.5 Living with Thermal Expansion and Contraction - Try This: Hot and Cold Balloons
Tech Connect: Sun Kinks, Breather Switches, and Train Disasters

Chapter 8 ENERGY TRANSFER AND CONSERVATION
8.1 Thermal Energy Transfer - Try This: Make a Mini Windmill
8.2 CONDUCT AN INVESTIGATION: The Transfer of Energy through a Substance
8.3 Conduction
8.4 Conduction and Geological Processes
8.5 Convection - Try This: Investigate Convection Currents
8.6 Convection in the Environment
8.7 Radiation - Try This: Radiant Energy and Colour
8.8 Managing the Transfer of Thermal Energy
8.9 EXPLORE AN ISSUE CRITICALLY: Tough Decisions
8.10 SOLVE A TECHNOLOGICAL PROBLEM: The Amazing Coffee Keeper

Chapter 9 HEAT SOURCES IN THE ENVIRONMENT
9.1 Energy Sources
Awesome Science: Cooling Downtown Toronto with Deep Lake Water
9.2 Conventional Energy Sources
.3 Global Warming - Try This: The Green Team Action Challenge
9.4 Alternative Energy Sources: Wind and Wave Energy
9.5 Alternative Energy Sources: Solar Energy - Try This: Make a Solar Oven
9.6 Alternative Energy Sources: Geothermal Energy
9.7 Alternative Energy Sources: Biofuels
9.8 EXPLORE AN ISSUE CRITICALLY: More Nuclear Power?

UNIT D: FORM AND FUNCTION

Chapter 10 STRUCTURES IN THE WORLD
10.1 Structures All Around Us
10.2 Forces
10.3 Classifying Structures - Try This: Classifying Structues
10.4 External and Internal Forces
Awesome Science: Tacoma Narrows Bridge: When Structures Fail
10.5 PERFORM AN ACTIVITY: Modelling Internal Forces

Chapter 11 STRUCTURAL STRENGTH AND STABILITY
11.1 Stability of Structures - Try This: Finding the Centre of Gravity
                                                - Try This: Centre of Gravity and Stability
11.2 Making Structures Strong: The Beam
11.3 CONDUCT AN INVESTIGATION: Factors Affecting a Structure’s Ability to Support a Load
11.4 Making Structures Strong: The Truss, Arch, and Dome - Try This: Building and Testing Trusses
Tech Connect: Carbon Nanotubes
11.5 SOLVE A TECHNOLOGICAL PROBLEM: Design a Scaffold
11.6 Structural Failure - Try This: Observe the Effect of Temperature
11.7 SOLVE A TECHNOLOGICAL PROBLEM: Preventing Structural Failure

Chapter 12 FORM, FUNCTION, AND BEAUTY
12.1 The Product Development Process - Try This: Market Research for Backpacks
12.2 EXPLORE AN ISSUE CRITICALLY: A Megatron in Townsville
12.3 Symmetry in Form and Function - Try This: Choosing an Apartment
12.4 Ergonomics: Designing for Human Comfort and Safety - Try This: Analyze Your Computer Workstation
12.5 PERFORM AN ACTIVITY: Applying Ergonomics—Making a Better Keyboard
12.6 Universal Design - Try This: Using the Principles of Universal Design
Science Works: The Golden Ratio

Science Skill Handbook included.

443 pages.