combustion reaction

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3 06, 2017

What is a combustion reaction? Chemistry

By |2019-04-18T05:22:11-07:00June 3rd, 2017|Chemistry|0 Comments

A candle flame What's a combustion reaction? When two molecules bump into each other under the right circumstances, they may exchange electrons in ways that change both molecules into new kinds of molecules. What's a molecule? More about electrons All our chemistry articles Releasing heat or light or electricity While they're doing that - [...]

3 06, 2017

Fire and Magnifying Glasses – Chemistry project

By |2019-06-08T18:24:29-07:00June 3rd, 2017|Chemistry|0 Comments

Using magnifying glasses to focus sunlight and start a fire Be careful with fire! Be very careful with fire, because it can burn you, or burn down your house. If you're not an adult, make sure an adult knows when you do this experiment and thinks you are safe. Combustion reactions Sunlight and photons [...]

2 06, 2017

What is oxygen? Atoms, elements, chemistry

By |2018-04-24T14:46:22-07:00June 2nd, 2017|Chemistry|0 Comments

Diagram of an oxygen atom When a star has changed all of its hydrogen atoms into helium, it turns into a red giant and moves on to convert the helium atoms into carbon atoms and oxygen atoms. All of the oxygen in the universe starts out inside stars. Then when all the helium is used up, [...]

1 06, 2017

Rust and iron – Chemistry project

By |2017-06-01T22:24:46-07:00June 1st, 2017|Chemistry|0 Comments

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 that are made of iron and have rusted. You might check cars, fences, old toys or tools left in the yard, nails, and [...]