Year 4 - What is a gas?

Date: 19th Sep 2023 @ 9:34am

Key questions: What is mass? Does air have mass? Which gas does fire need to burn?

We discovered that air does have mass by weighing an empty balloon and a balloon with air in it.

We also discovered that when mixing bicarbonate of soda and vinegar we got carbon dioxide and our match blew out. That's because fire needs oxygen to burn.