Chemistry
High School (9–10)
General
States of Matter › Particles of MatterStates of Matter › Change of StateStates of Matter › Evaporation and CoolingChapter 1Matter in Our Surroundings
Look around you. A stone, a glass of water and the air that you breathe are all matter, and they are very different. Why is a stone hard, water runny and air invisible? In this chapter we study the tiny particles that matter is made of. We find how they explain the solid, liquid and gas states, how ice melts and water boils, and why wet clothes dry and sweat cools us. Python helps us with the calculations.
Part of Chemistry · High School (9–10) (chapter 1)
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Particles of Matter
A spoon of sugar disappears in a glass of water, and the water does not overflow. A smell of food spreads across a house. In this course we find what matter is made of, how its particles behave, and how this gives us the solid, the liquid and the gas.
Changing the State of Matter
Ice melts in the sun, and water boils on a stove. A burn from steam is worse than a burn from boiling water. Here we learn what happens to the particles when matter changes state, how to measure the temperature in kelvin, and why heat can go in without a change of temperature.