Whatever a teacher is to you, you will always remember a teacher. What you have learned and what you have become.
As a teacher I would like to share an output written by a student in her chemistry journal just this first grading period (and expecting more in the next grading periods and the next years):
"Do you ever wonder what's the role of chemistry in our daily life? Why do we need to study it? What is there in chemistry that doesn't contain any other subject matters? Is chemistry really that important? We actually use or apply chemistry in our daily life, we just didn't recognized it. Like observing the people around you. That's part of a scientific method. Or burning a plastic. That's a chemical change. Breathing is also chemistry. All problems have answers and solutions. Believe it or not, it is simply chemistry.
Like us, chemistry had its own past. Aristotle became the most influential of the Greek philosophers, and he proposed that there were also four fundamental properties mainly hotness, coldness, dryness and wetness. From the beginning of the Christian Era to the 17th and 18th centuries was the period of chemistry known as Alchemy. It is the science concerned with transmutation of one element into another. Until the latter part of the 18th century, chemistry didn't evolve. Antoine Laurant ea Voisier was considered the father of modern chemistry. In the middle of the nineteenth century, only about sixty elements were known. The first periodic table was published by Dmitri Mendeleev.
Solving how many meters are there in one kilometer is also a part of chemistry. You use the DAM Conversion. You can also convert grams to kilograms, liters to milliliter and hours to seconds. If you have a fever, you can also convert your temperature. Try converting celsius into fahrenheit. Even though you're sick you can still apply the concept of chemistry. Mole Conversion, now that's another kind of conversion. You use the Avogadro's Number (6.02 × 1023) made by the Italian chemist, Amadeo Avogadro. Atoms are the smallest particle of an element. Inside an atom, you can find the nucleus. Inside the nucleus there is a proton and a neutron. The electrons are circling around the nucleus. Each with it's own charge, proton has a positive one, electrons have negative while the neutron has none. To be honest, in all of our lessons, I find the mole conversion hard.
The human eye observes changes in matter, but how to identify what type of change the matter underwent? Changes in matter occur every day. There are two types of ways how matter changes. First the Physical Change, like cutting a sheet of paper. It would still be paper however it would be a different shape. And second is the Chemical Change like burning the paper to ashes. You can't return ashes to paper, right? Matter is known to exist in three states; solid, liquid and gas. Solids have molecules that are near each other, that's why it has a definite shape and volume. The molecules of a liquid are not that far from each other but it only takes the shape of the container. While the molecules of gas are far away from each other. That's the reason why gas has no definite volume or shape.
Chemistry is a big part of our lives. You will find chemistry in our daily food. Your body is made up of chemical compounds. The emotions you feel like love, jealousy, envy, infatuation and infidelity all share a basis in chemistry. Everything in our world is made of chemicals. Now tell me, is chemistry not important?"
"Danielle cecilia Sulit"
and this one
