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Today, we learned about solids using ice cream as an example. Solids have a fixed shape and volume. The particles in ice cream are tightly packed and vibrate in place, giving it its firm texture. We observed how it holds its shape in the cone!

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We explored liquids by making lemonade! Liquids take the shape of their container but have a fixed volume. The water and lemon juice particles can move around each other, which is why our lemonade can be poured into different glasses.

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February 20, 2024: Gaseous Steam from Tea

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February 20, 2024: Gaseous Steam from Tea

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We observed gases by watching steam rise from a cup of hot tea. Gases have no fixed shape or volume, and their particles move freely. The steam spreads out to fill the whole room, just like the lovely aroma of the tea!

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March 5, 2024: Particle Models with Candy

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March 5, 2024: Particle Models with Candy

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Today, we used different candies to create models of particles in solids, liquids, and gases. Gummy bears tightly packed represented solids, loosely arranged jellybeans were liquids, and scattered sprinkles showed gases. It was a delicious way to visualize particle arrangement!

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We explored changing states from solid to liquid by melting chocolate. As we gently heated the chocolate, we saw it change from a solid bar to a smooth, flowing liquid. The heat made the particles move faster and farther apart!

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Today, we changed a liquid to a solid by freezing fruit juice into popsicles. We poured juice into molds and put them in the freezer. The cold temperature slowed down the particles, making them stick together to form a solid treat!

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We observed the change from liquid to gas by evaporating salt water. As the water heated up, it turned into vapor and disappeared, leaving salt crystals behind. The fast-moving particles escaped into the air as a gas!

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May 15, 2024: Condensation on Cold Drinks

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May 15, 2024: Condensation on Cold Drinks

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We learned about condensation by observing cold drinks on a warm day. Water vapor in the air (a gas) cooled down when it touched the cold glass, changing back into liquid water droplets on the outside. It's like the air is sweating!

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Today, we saw a special change of state called sublimation using dry ice (solid carbon dioxide). It changed directly from a solid to a gas without becoming a liquid first! We used it to make spooky, foggy effects with our fruit punch.

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June 20, 2024: States of Matter Food Festival

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June 20, 2024: States of Matter Food Festival

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We celebrated our learning with a States of Matter Food Festival! We had ice pops (solid), soup (liquid), and fizzy drinks (liquid with gas bubbles). We also made cotton candy, watching sugar change from solid to liquid to a fluffy solid again. What a tasty way to review all we've learned about matter!