Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

The rate of a chemical reaction is a measure of how fast the reactants are being used up and how fast the products are being made. Reactions in which a gas is produced can be used to monitor the rate.

Speaker one All right. So have you ever left your milk outside the fridge at room temperature, and then wondered why it’s gone sour and then smelt sort of weird? Speaker two No, (laughs) but. it’s ...