States of Matter

Science, Grade 3

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States of Matter © Copyright NewPath Learning. All Rights Reserved. 94-4371 Visit www.newpathlearning.com for Online Learning Resources. The three states of matter are liquid, solid, and gas. Matter can change from one state to another through a change in temperature. Solids, Liquids & Gases Solids keep their shape and always take up the same amount of space. Liquids can flow and change their shape depending on the container they are in. Gases, on the other hand, are often invisible and change their volume and shape to fill up the container they are in. State Changes in Water Liquid to Ice When liquid water cools to 0ºC, it changes to solid water, called ice. Condensation - Gas to Liquid Condensation is the opposite of evaporation. It takes place when water vapor (gas) cools and changes from vapor to liquid. If you’ve ever left a cold drink outside on a hot summer day, then you’ve already seen condensation. As the water vapor in the warm air touches the cold surface of the glass, it cools forming water droplets (liquid) on the glass. Liquid to Water Vapor When liquid water heats to 100ºC, it boils and changes to water vapor. This process is called evaporation. Regardless of its state, it is still water. C 250 ml 50 60 70 80 90 100 40 30 20 10 HELIUM water vapor solid ice change shape to fit container keep their shape SolidS liquidS GaSeS change volume to fill container water molecules gas (water vapor in the air) liquid water droplets
© Copyright NewPath Learning. All Rights Reserved. 94-4371 Visit www.newpathlearning.com for Online Learning Resources. Pause & Review Sort the items into solids, liquids and gases. Write the name of the item under each category. Solids ____________________ ____________________ ____________________ ____________________ ____________________ Liquids ____________________ ____________________ ____________________ ____________________ ____________________ Gases ____________________ ____________________ ____________________ ____________________ ____________________ HELIUM States of Matter