Heating, Cooling, and States of Matter
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Heating, Cooling, and States of Matter
Exploring how matter changes Year 5-6 Science Investigation Lesson 3: Landforms and Communities Unit
What Happens When Things Get Hot or Cold?
Think about ice on a hot day What happens to water in a kettle? Share your observations with a partner
The Three States of Matter
Solid - particles packed tightly together Liquid - particles move freely but stay together Gas - particles spread out and move quickly All matter is made of tiny moving particles
Investigation 1: Ice Melting Experiment
Work in groups of 2-3 students Observe ice cube melting at room temperature Record temperature changes with thermometer Describe what you see, feel, and measure Use scientific vocabulary: melting, solid, liquid
Melting and Freezing
Melting: solid changes to liquid when heated Freezing: liquid changes to solid when cooled Temperature affects how fast particles move Ice melts at 0°C (32°F) Water freezes at 0°C (32°F)
Investigation 2: Observing Boiling Water
Teacher demonstration for safety Watch water change from liquid to gas (steam) Steam is water in gas form Boiling point is 100°C at sea level Record observations of bubbles and steam
Heating vs Cooling Effects
{"left":"Heating makes particles move FASTER\nParticles spread out more\nSolids can melt to liquids\nLiquids can boil to gases","right":"Cooling makes particles move SLOWER\nParticles get closer together\nGases can condense to liquids\nLiquids can freeze to solids"}
Key Science Learning
Matter changes state when we heat it up or cool it down, but it's still the same substance - just in a different form!