Class 10 science simulations

Chapter 1: Chemical Reactions and Equations

• Chemical Reactions: Molecules must crash hard enough to react. What makes that happen more often?
• Electrolysis: Split water into hydrogen and oxygen with a battery. Which gas do you get more of?
• Redox Reactions: Two metals and two solutions make a battery. Where do the electrons come from?

Chapter 2: Acids, Bases and Salts

• pH Scale: Drip acid or alkali into water and watch the colour: how much does each drop change it?

Chapter 3: Metals and Non-metals

• Molecular Bonding: What holds two atoms together, and how hard do you have to shake them to break it?
• Redox Reactions: Two metals and two solutions make a battery. Where do the electrons come from?

Chapter 4: Carbon and its Compounds

• Combustion: Put a jar over a candle. Why does the flame go out, and when?
• Molecular Bonding: What holds two atoms together, and how hard do you have to shake them to break it?
• Polymer Chains: Plastics are long chains of small molecules. Why does a chain curl up, and why is it stretchy?

Chapter 5: Life Processes

• Enzyme Activity: Enzymes speed up reactions. Why do they stop working when it gets too hot?
• Cellular Respiration: Living things get energy from food. Does it make a difference whether they have oxygen?
• Heart & Circulation: Your heart beats about 100,000 times a day. How does a squeeze become blood pressure?
• Photosynthesis: Plants make their food from light, water and carbon dioxide. Can we see it happening?

Chapter 6: Control and Coordination

• Neuron Signals: Nerves carry messages from your toes to your brain. How does a signal travel along a nerve?

Chapter 7: How do Organisms Reproduce?

• Cell Division: One cell becomes two. How does each new cell end up with a full set of chromosomes?
• DNA Replication: Before a cell divides it copies all its DNA. How does it copy it so well?

Chapter 8: Heredity

• Genetic Inheritance: Two purple-flowered plants can have white-flowered babies. How?

Chapter 9: Light: Reflection and Refraction

• Wave Reflection: Ripples hit a tilted wall. Which way do they bounce?
• Bending Light: Shine a ray into a glass block. How much does it bend?
• Candle, Lens and Screen: Slide the screen until the candle is sharp. Why is its picture upside down?

Chapter 10: The Human Eye and the Colourful World

• Prism Rainbow: Split white light into a rainbow with a glass prism.

Chapter 11: Electricity

• Simple Circuits: Close the switch. What makes the bulbs brighter: more volts, fewer bulbs, or a different wiring?

Chapter 12: Magnetic Effects of Electric Current

• Magnet and Compasses: Slide a magnet and compasses round a desk. Which way do the needles point, and why does a far one wobble slowly?
• Scrapyard Crane: Switch on the crane magnet. How many cans can it grab, and how do you make it stronger?

Chapter 13: Our Environment

• Ecosystem Balance: Can plants and animals live for weeks in a sealed jar? Where does their oxygen come from?
• Food Web: Who eats whom in a meadow? Take one species away and see what happens to the rest.

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