We see changes all around us. The corrosion of iron object, the ripening of the fruit, making ice cubes, break glass, baking the cake, burning of firewood or souring of milk can teach us a lot about the types of changes happening around us. I usually such examples daily life in the home school curriculum so that children can learn to use everyday occurrence and at the same time to know why things change.
When you make ice from water in the refrigerator, the new material is not formed. The material is the same: water. The only difference is that it has changed from a liquid state to a solid state. This change can be reversed by melting ice cubes back into the water. This type of change is called physical changes.
When the wood burns, it turns into ashes, new material. Furthermore, it is impossible to change the ash back into the forest. Therefore, it is material change. These are all events that the child has suffered, and they can bring life to homeschool curriculum.
When fruit ripens, it is a change in taste and color, which indicates that there has been some chemical change. The ripe fruit can become raw again, making this irreversible change. What types of changes take place when the glass breaks, when iron rusts or when milk sours?
The following experiment can teach us about the changes and much more.
The Microwave Soap Experiment You have Ivory soap for this experiment. Other soaps will not work as well or may not work at all. Take refrigerator-safe dish and put a bar of Ivory soap in it. Place the dish in the microwave oven and run for two to three minutes. Something magical happens!
You will notice that beginning from the point where the microwaves slide, soap begins to foam. The volume of foam increases within the next minute or so, and will be about five times the volume of the soap bar. Do not touch the soap until it cools.
eyes that change. Now touch the soap and find out if there was a physical change or a material change. Have the content changed? Use it with water and find out if the properties have changed.
When microwaves heat up the air and water in the soap, expanding air and water turns into steam. Soap, which is softened now, expands while trapping air bubbles inside it. As soft soap grows, it forms a foam. This is a quick and safe test that could add meaning homeschool curriculum.
Now compare the above effort to bake a cake. When you bake a cake, you mix the flour, egg, extracts, sugar and other ingredients in the dough. The end product is something new: a delicious cake. Now you can not get sugar or egg or wheat back in their original form. This irreversible reaction is called a chemical reaction.
Check out the free “Homeschool Parent Guide to teaching science”, for more great science experiments and activities, click on the link below.