Chemical Changes!
Science: I can explore household substances; I can use the scientific method to answer a question: I can design a fair test. In class, we have been learning about Chemistry and Matter. This week, we have been learning about physical and chemical changes. A Chemical Change is when there's a change that creates something new and a Physical Change is when its appearance changes but it's still the same substance. Five clues that a chemical change has happened are: Bubbles form Heat is released Light is produced There is a colour change A smell is produced An example of a Physical Change would be changing States of Matter: An ice cube melting to water Yesterday, we put baking soda in a balloon and mixed it with vinegar to see what would happen. The balloons inflated. It was fun to watch them. When you mix baking soda and vinegar, it creates carbon dioxide (CO2) gas. They expanded because of the increase in carbon dioxide gas. We know the molecules, when they turn int...