Silica and sand castles – Science projects – Chemistry
Sand castle by the ocean If you want to see some real silica, go to the beach or to a playground with a sandbox. Beach sand (which is also what [...]
Sand castle by the ocean If you want to see some real silica, go to the beach or to a playground with a sandbox. Beach sand (which is also what [...]
Candles burn carbon using oxygen You can do experiments to show that you need oxygen for a fire to burn. Light a candle, and when it is burning well, put [...]
A jug of nitrogen fertilizer It's pretty easy to see just how much a plant needs nitrogen to grow. Just take any two plants (they could be small house plants, [...]
Unfortunately, you should not play around with mercury because it can be poisonous. It's hard to get these days anyway, now that they don't sell mercury fever thermometers anymore. But you can [...]
Lead weights used for fishing How heavy is lead? See for yourself how heavy lead weights are. Go to a sports store and get some small lead fishing weights (make sure [...]
A rusty sign You can easily see that iron rusts and turns red when oxygen touches it. Go look around your backyard or your neighborhood and try to find ten things [...]
Ice floats: A glass of ice water A project with ice To see that ice takes up more room than water does, stick a piece of tape to a glass [...]
A group of glasses of water Take five glasses of water. Leave one plain water, add one tablespoon of salt to the second glass, two tablespoons of salt to the [...]
Food coloring and water project - A glass of water How can we see molecules move? To see that water molecules move around even when the water seems to be [...]
You can see that helium is lighter than air by getting a helium balloon. When you let go of it, it goes up, because the helium is lighter than the nitrogen and [...]