Elephant toothpaste 🐘

Today we were making elephant toothpaste. A book we read shared with us on how to make it. It was part of our inquiry as an experiment to see a chemical change which means it’s irreversible. The ingredients we used were:

1. Hydrogen peroxide
2. Food colouring
3. Dishwashing liquid
4. Warm water
5. Yeast

The elephant toothpaste was a fun experiment so the whole group contributed in some ways. We didn’t put much of the yeast mixture in which is why it worked just how we wanted it to. I enjoyed doing this yet I would have liked it more if it went faster. Here is a link to the text I read.

Chemical change: Fire 🔥

Chemical change: Fire

Ask a question - When will I notice a chemical change?

Construct a hypothesis( make a guess) - When the match/paper is lit.

Conduct the experiment - //Making a fire//

Record your observations and data colour change - Colour change Temperature change Release of gas It became irreversible A new substance was formed

Analyse information - Once the newspaper was on fire it turned into a new substance, ash. The temperature change caused the newspaper to break, turn black, smell and smoke up. The smoke is also a release of gas. As for colour change it turned black.

Chemical change

This morning we were making pancakes to prove that there is a chemical change. Before we could do anything we had to learn about the scientific method. After about 10 minutes we went to the hall to start out experiment. The ingredients  we had were combined to make a batter. Next was to cook it. When it was on the pan it showed signs of chemical change. We could tell there was a chemical change because there was bubbles forming,

Release of gases, colour change,

and obviously a temperature change. Due to the heat the chemical change became edible, as well as that, a new substance was formed which could not be reversed.