π¬ SNC2D – Science, Grade 10 Academic
Toronto District School Board · Complete Video Resource Guide · All 4 Units
π Table of Contents
- Unit 1 – Chemistry: Chemical Reactions · Atoms & Ionic Compounds · Molecular Compounds · Balancing Equations · Types of Reactions · Acids, Bases & pH · Neutralization
- Unit 2 – Biology: Tissues, Organs & Systems · Cell Structure & Organelles · Mitosis & the Cell Cycle · Tissues & Specialization · Human Organ Systems · Plant Systems
- Unit 3 – Physics: Light & Geometric Optics · Properties of Light & EM Spectrum · Reflection & Plane Mirrors · Curved Mirrors & Ray Diagrams · Refraction & Snell's Law · Lenses & the Human Eye
- Unit 4 – Earth & Space Science: Climate Change · The Greenhouse Effect · Evidence of Climate Change · Human Impacts & Canada's Role · Climate Solutions & Action
Chemistry is the study of matter and how it transforms. In this unit, students learn to name and write formulas for ionic and molecular compounds, balance chemical equations, classify reaction types, and explore the chemistry of acids and bases — including pH, indicators, and neutralization reactions.
⚛️ 1.1 · Atoms, Ions & Ionic Compounds
Before writing any chemical formula, students need to understand why atoms form ions and how oppositely charged ions attract each other to form ionic compounds. This Grade 10 Ontario-specific video covers ions from the periodic table, the crossover rule for writing ionic formulas, naming binary ionic compounds and those with polyatomic ions, and how to read a chemical formula — the foundation for everything else in the chemistry unit.
- How ions form
- Crossover rule for formulas
- Naming ionic compounds
- Polyatomic ions
Source: Science 10 SNC2D
π 1.2 · Molecular (Covalent) Compounds
Unlike ionic compounds, molecular (covalent) compounds form when two non-metals share electrons. This video introduces the rules for naming and writing formulas for binary molecular compounds using Greek prefixes (mono-, di-, tri-, tetra-, etc.), compares molecular versus ionic naming systems, and gives practice examples to solidify the differences — an essential distinction on SNC2D tests.
- Covalent bonding basics
- Greek prefix system
- Naming molecular compounds
- Ionic vs. molecular comparison
Source: Grade 10 Chemistry
⚖️ 1.3 · Balancing Chemical Equations
The Law of Conservation of Mass states that matter cannot be created or destroyed — so both sides of a chemical equation must have the same number of each type of atom. This dedicated SNC2D episode covers how to write skeleton equations from word equations, count atoms, and systematically balance equations using coefficients. A step-by-step approach that builds the skill used throughout all reaction types.
- Law of conservation of mass
- Word equations → skeleton equations
- Counting atoms
- Balancing with coefficients
Source: SNC2D Series
π₯ 1.4 · Types of Chemical Reactions
All chemical reactions fall into one of five categories: synthesis, decomposition, single displacement, double displacement, or combustion. This SNC2D-aligned episode covers all five reaction types with clear definitions, balanced examples, and visual summaries. Students will learn to identify the type of reaction from an equation and predict products — a skill tested on nearly every SNC2D chemistry quiz and unit test.
- Synthesis reactions
- Decomposition reactions
- Single & double displacement
- Combustion reactions
Source: SNC2D Series
π§ͺ 1.5 · Acids, Bases & the pH Scale
Acids and bases are two of the most important categories of compounds in everyday life — from stomach acid to household cleaners. This Ontario SNC2D lesson covers the properties of acids and bases, how to write their chemical formulas (binary acids vs. oxyacids), the pH scale (0–14), indicators, and real-life examples from swimming pools to acid rain. The video connects chemistry directly to environmental and consumer-product contexts required by the curriculum.
- Properties of acids & bases
- pH scale (0–14)
- Indicators (litmus, phenolphthalein)
- Real-world applications
Source: Science 10 SNC2D
π 1.6 · Neutralization Reactions & Acid Rain
When an acid meets a base, they neutralize each other to produce a salt and water. This SNC2D episode covers neutralization reactions, how to write and balance them, and the chemistry of acid precipitation — one of the most important environmental applications in the course. Students learn why acid rain forms, how it damages ecosystems, and how neutralization chemistry is used as a solution, directly connecting chemistry to the real world.
- Neutralization: acid + base → salt + water
- Balancing neutralization equations
- Acid precipitation formation
- Environmental impacts
Source: SNC2D Series
Life is organized from the smallest unit — the cell — up through tissues, organs, and organ systems. In this unit, students explore cell structure and division, how cells specialize into tissues, and how the major organ systems of the human body and plants work together to sustain life.
π¬ 2.1 · Cell Structure & Organelles
Every living thing is made of cells, and cells are packed with specialized structures called organelles. This beautifully animated Nucleus Medical Media video explains the function of each major organelle — nucleus, mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, chloroplasts, and the cell membrane — and highlights the key differences between plant and animal cells. An essential foundation for understanding mitosis and tissue specialization.
- Cell membrane & nucleus
- Mitochondria & ribosomes
- Endoplasmic reticulum & Golgi
- Plant vs. animal cell differences
Source: Nucleus Medical Media
π 2.2 · The Cell Cycle & Mitosis
Cells reproduce through the cell cycle — a precise sequence of events ending in mitosis, where one cell divides into two genetically identical daughter cells. This Ontario-aligned SNC2D tutorial recommended for the Nelson textbook covers the complete cell cycle (interphase, prophase, metaphase, anaphase, telophase, and cytokinesis), why mitosis occurs, and how errors in cell division can lead to cancer. Clear diagrams make each phase easy to remember.
- Interphase: cell growth & DNA replication
- Prophase → metaphase → anaphase → telophase
- Cytokinesis
- Why mitosis matters
Source: Ontario Science Tutorial (Grade 10)
𧬠2.3 · Cell Specialization, Tissues & Stem Cells
Not all cells are the same — through specialization, cells develop unique shapes and functions to form the four types of tissue: epithelial, connective, muscle, and nervous. This GCSE/Grade 10 biology video covers the levels of organization from organelle to organism, how stem cells differentiate into specialized cells, and the medical promise of stem cell technology — including the ethical considerations discussed in the SNC2D curriculum.
- Four types of tissue
- Cell differentiation
- Stem cells & their applications
- Levels of organization
Source: Cognito (GCSE Biology)
❤️ 2.4 · Human Organ Systems
The human body runs on the coordinated teamwork of multiple organ systems. This dedicated SNC2D Biology lesson covers the three organ systems most emphasized in Grade 10 — the digestive system (breaking down food), the circulatory system (transporting nutrients and oxygen via the heart and blood vessels), and the respiratory system (exchanging O₂ and CO₂ in the lungs) — explaining how they interact to sustain cellular life.
- Digestive system & enzymes
- Circulatory system & the heart
- Respiratory system & gas exchange
- How systems interact
Source: Science 10 SNC2D
πΏ 2.5 · Plant Systems & Reproductive Strategies
Plants have their own remarkable systems for transportation, gas exchange, and reproduction. This video covers the vascular system of plants (xylem and phloem), the structure of a leaf and how photosynthesis occurs in it, the roles of roots and stems, and how plants reproduce both sexually (through seeds and pollination) and asexually. A key topic for the biology unit that is often overlooked in review sessions.
- Xylem & phloem (vascular tissue)
- Leaf structure & photosynthesis
- Root & stem functions
- Sexual vs. asexual reproduction
Source: GCSE Biology
Light is one of the most fascinating phenomena in physics. In this unit, students study how light is produced and described, how it behaves when it bounces off mirrors and bends through transparent materials, and how these principles are applied in lenses, cameras, telescopes, and the human eye.
π‘ 3.1 · Properties of Light & the Electromagnetic Spectrum
What exactly is light? This Ontario Grade 10 tutorial introduces light as a form of electromagnetic radiation that travels in straight lines at 3 × 10⁸ m/s. Students learn about the electromagnetic spectrum (from radio waves to gamma rays), the visible spectrum, different sources of light (incandescence, luminescence, LEDs, lasers), and how light interacts with matter — through absorption, reflection, and transmission (transparent, translucent, and opaque materials).
- Electromagnetic spectrum
- Visible light & wavelength
- Light sources (incandescent, LED, laser)
- Transparent, translucent, opaque
Source: Ontario Grade 10 Science
πͺ 3.2 · Reflection & Plane Mirrors
When light hits a smooth surface, it bounces off according to the Law of Reflection: the angle of incidence equals the angle of reflection. This video clearly explains the Law of Reflection, introduces the normal line and angle conventions, and describes the characteristics of images formed in plane (flat) mirrors using the SALT acronym (Size, Attitude, Location, Type). Includes both regular and lateral inversion, and the distinction between real and virtual images.
- Law of reflection (angle of incidence = angle of reflection)
- Normal line & angle conventions
- SALT: size, attitude, location, type
- Virtual images in plane mirrors
Source: Grade 10 Optics Tutorial
π 3.3 · Curved Mirrors & Ray Diagrams
Concave mirrors converge light and are used in car headlights, telescopes, and makeup mirrors. Convex mirrors diverge light and are used in security mirrors and side-view mirrors. This comprehensive video covers the key terminology (focal point, centre of curvature, principal axis, vertex), how to draw accurate ray diagrams for both concave and convex mirrors using the three principal rays, and how to determine image characteristics using SALT. The mirror equation is also introduced.
- Concave vs. convex mirrors
- Focal point & centre of curvature
- Drawing ray diagrams (3 principal rays)
- Mirror equation 1/f = 1/do + 1/di
Source: Grade 10 Optics Tutorial
π 3.4 · Refraction & Snell's Law
When light crosses from one transparent medium into another, it bends — a phenomenon called refraction. This Khan Academy classic introduces refraction intuitively, then develops Snell's Law (n₁sinΞΈ₁ = n₂sinΞΈ₂) mathematically. Students learn why light bends toward the normal when entering a denser medium, the concept of index of refraction, total internal reflection and the critical angle, and applications in fibre optics, diamonds, and natural phenomena like mirages and apparent depth.
- Refraction & index of refraction (n)
- Snell's Law: n₁sinΞΈ₁ = n₂sinΞΈ₂
- Total internal reflection & critical angle
- Mirages, apparent depth, fibre optics
Source: Khan Academy – Geometric Optics
π️ 3.5 · Lenses, Ray Diagrams & the Human Eye
Lenses use refraction to focus or spread light. This video introduces converging (convex) lenses and diverging (concave) lenses, explains why each type bends parallel rays the way it does using Snell's Law, and demonstrates how to draw ray diagrams for lenses to find image location and characteristics. The lesson extends to the human eye — how it functions as a converging lens system — and corrective optics for myopia (nearsightedness) and hyperopia (farsightedness).
- Converging vs. diverging lenses
- Principal focus & optical centre
- Ray diagrams for lenses
- The human eye & corrective lenses
Source: Mr. H – Optics
Climate change is the defining environmental challenge of our time. In this unit, students explore the science behind Earth's natural and anthropogenic greenhouse effect, examine multiple lines of evidence for climate change, investigate Canada's role in contributing to and addressing it, and evaluate potential strategies for mitigation and adaptation.
π 4.1 · The Greenhouse Effect: Natural vs. Anthropogenic
Earth's natural greenhouse effect keeps our planet warm enough to support life — without it, average temperatures would be −18°C. However, human activities have amplified this effect, causing global temperatures to rise beyond natural variability. This visually rich video clearly distinguishes the natural greenhouse effect from the anthropogenic (human-caused) greenhouse effect, identifies the key greenhouse gases (CO₂, CH₄, N₂O, water vapour), and explains the role of each in trapping heat in the atmosphere — core content for SNC2D climate tests.
- Natural greenhouse effect
- Anthropogenic (enhanced) greenhouse effect
- Key greenhouse gases: CO₂, CH₄, N₂O
- Heat trapping & global temperature
Source: Climate Science
π§ 4.2 · Evidence for Climate Change
Scientists use multiple types of proxy data to reconstruct past climates and demonstrate that today's warming is unprecedented. This video explores how ice cores, tree rings, fossil records, and ocean sediment samples provide evidence stretching back hundreds of thousands of years. Students see how trapped air bubbles in ice cores reveal past CO₂ concentrations, how the data aligns with temperature records, and why scientists are confident that current climate change is real and human-driven — directly addressing SNC2D curriculum expectations on data and evidence.
- Ice cores as climate archives
- CO₂ and temperature correlation
- Tree rings & fossil evidence
- 800,000 years of climate data
Source: British Antarctic Survey
π 4.3 · Human Impacts & Canada's Role
Canada is one of the highest per-capita greenhouse gas emitters in the world, and the SNC2D curriculum specifically requires students to understand Canada's contribution to climate change. This Ontario-aligned Science 10 lesson covers the major human activities that drive climate change — fossil fuel combustion, deforestation, agriculture, and industrial processes — and examines their impacts in Canada and globally, including permafrost thaw, Arctic ice loss, and shifting weather patterns that affect communities across the country.
- Fossil fuel combustion emissions
- Deforestation & land use
- Canada's per-capita emissions
- Arctic ice loss & permafrost thaw
Source: Science 10 SNC2D
♻️ 4.4 · Climate Solutions, Mitigation & Adaptation
Understanding the problem is only the first step — the SNC2D curriculum also requires students to evaluate solutions. This video surveys the full range of climate strategies: mitigation approaches (renewable energy, carbon capture, efficiency improvements, reforestation) that address the root cause by reducing emissions, and adaptation approaches (flood barriers, drought-resistant crops, urban heat island reduction) that help communities cope with changes already underway. Students are equipped to think critically about trade-offs and evaluate the effectiveness of different interventions.
- Mitigation vs. adaptation
- Renewable energy & carbon capture
- Reforestation & land management
- Policy & international agreements
Source: Bozeman Science
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