Have you ever had a static shock from a shopping trolley or an escalator? The shock is because of static electricity, which can cause materials to attract or repel each other. How does static electricity work? Static electricity is what makes your hair stand on end when you rub a balloon on it. Static electricity…
These super simple investigations are great for demonstrating the surface tension of water. What is surface tension? Surface tension is a force which causes a layer of liquid to behave like an elastic sheet or skin. Water molecules are more attracted to each other than other molecules, as water is a polar molecule. The positive hydrogen end of…
Now that Christmas is over, it’s time to embrace winter and all the exciting science activity opportunities the cold weather opens up. I’ve assembled an exciting collection of winter science experiments and STEM challenges perfect for cheering up a dreary January. Don’t forget I’ve also got 100s more easy science experiments to do at home…
What is a colloid ? A colloid is a mixture is two or more substances mixed together but not chemically combined ( they can be separated ). They are a special type of mixture where tiny particles of one substance are scattered through another substance. Cream is a colloid as it’s made up of tiny particles…
Did you know you can make butter from cream? This is a super simple way to make butter at home, but it does require a bit of effort. You need good quality double cream, a jar and some strong arms! This activity is a fun kitchen hack if you’ve got leftover cream and a great way…
Ice experiments are always fun, easy to set up, and often mess-free! These investigations are great for cooling down in summer, and if it’s cold enough in winter, you could try leaving water in a mould or tray outside overnight to see if it freezes without a freezer. Don’t forget I have lots of FREE…
Did you know you can make homemade ice cream in a bag in less than 10 minutes with just milk, salt and ice? You don’t even need a freezer!! Our ice cream recipe is easy for kids to follow and a fun science activity at the same time. Experiment with different flavours and toppings to…
These red cabbage indicator colour changing potions are fantastic fun for kids of all ages and very easy to create. We used red cabbage indicator and added different amounts of baking soda ( an alkali ) and vinegar ( an acid ) to make the different colours. What is a pH Indicator? A pH indicator is a…
This is a great little science experiment that kids will love! When baking soda and vinegar are added, raisins dance around a glass of water. Dancing Raisins Experiment What happens when you put a raisin in a glass of water? It sinks! Do you think it’s possible to make raisins rise to the top and…
Making oobleck, also known as cornflour gloop or slime, was one of the first science activities I wrote about on Science Sparks. It’s a brilliant indoor or outdoor science activity that only needs two ingredients, so it is super easy as well! I’ve given this very old post about how to make oobleck a bit…
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