Category Archives: Science 8

Anthropocene Article Annotation

What do you think it means?

This is an article to raise awareness of how much we harm the earth. We dump too much plastic, we have lots of carbon emissions, and we have cut the area for flora and fauna. We have done so much harm that we can technically name this a new geological era. We have entered a new epoch. This means that we have increased our impact on earth more than any other living thing. 

What parts make sense to you?

I makes sense as to why it is logical to name his a human era. I understand how we have a huge impact on the world with carbon emissions and producing things and not disposing them in an environmentally friendly idea. 

What concerns you?

What concerns me is if these levels continue to grow, then what will happen? The levels are already so high, so with a growing population- the waste levels would be much higher. What will happen to the flora and fauna?

What is confusing?

The graphics and charts are hard to understand. They don’t make any sense to me.

What questions do you have?

Is there a steady rate that this impact is increasing? 

What things can people do?

They can first follow the 3 r’s. Reduce, reuse, recycle. This will reduce the amount of garbage. Then they can use more green energy so that the electricity production is environment friendly.

What things should people do?

Thy should do all the things mentioned above as well as create new innovative ideas.

In what ways does the article touch on things that relate to our topics for semester 2?

This article talks about earth cycle and how we are always interfering and making a huge impact of our own on the earth cycles.

Chemical Reaction Summative Assessment

This is my experiment with Caustic Soda (Sodium Hydroxide). My project was using salt water and turning it into Caustic Soda. I used electrolysis to do that. To see my whole procedure, watch the video. I chose a video because to show the hydrogen and electrolysis process. It is much easier to see it that explain it in words. That why I will encourage you to see for yourself rather than have me explain in words. Also, a video is something I hadn’t made before in science class. I think I clearly met the criteria because I talked a lot about law of conservation of mass, and my molecular model shows the reaction. It shows that there is different arrangements of atoms and how the reaction works. I also have videos about all my electrolysis process. This shows that I met all my criteria. One unanswered question that still lingers is that after my voltage got higher, a green material was coming out. I wonder what that was? I think it an impurity but I’m not sure. If I were to do this again, I would probably learn a better way of measurement of how much gas is collected. My goal for the next unit is to continue pushing myself and be creative with my ideas.

 

Atkins Claim

What do you think of Atkins’ claim that the study of matter was inspired by human greed? I think that it is very true that the foundation of chemistry has come to existence from greed. Greed for immortality and wealth. Alchemists believed that you could live forever, so this search for immortality has lead to the basis of chemistry. Though what I wonder is that there must be some reason why the alchemists thought of immortality, I wonder what provoked them to think so?
What significance does Atkins attribute to the balance?

As stated in the introduction, this is the biggest or most clear difference between Alchemy and Chemistry. The number of atoms, how many atoms of each type, the placement of the atoms…all these specific things is the improvement in chemistry.

 

Why do you think he suggests the balance shifted the study of matter from a mysterious and somewhat magical system to a scientific one?

Alchemy was a bit blurry. Alchemy was like solving a math problem without numbers. With this balance and chemistry, you are solving a math problem with numbers and getting accurate answers. This accuracy turned the magic into science
What do you think is the completing thought that follows the sentence at the end of this page? (“Weighing matter before and after it had undergone transformation from one substance to another led to the principal concept that underlies all explanations in chemistry:”)

What do you think the “principal concept” is?

The number of atoms you use to make a molecule is the principle concept of chemistry. Also the conservation of mass.
Why?

Without the specific number of atoms, you can’t create the molecules. You can’t keep experimenting each time, you need exact numbers. You need to know how much hydrogen and oxygen you need to make water. 

Also, Hydrogen and Oxygen are gases, and when you mix them, you get the liquid water. Turning the gas into a liquid is a key as well. It is called conservation of mass. Chemicals and atoms can transform stuff. Chemical reactions can’t create or destroy mass, it can only transform mass.

Matter

What I know, understand, and wonder about food, water, and air at the beginning of Science 8.

Matter is anything that has weight. Matter can be felt. This world is made up of matter. The rocks, sea, trees, land… Matter can also transform. If you melt an ice cube (a solid), it becomes water (a liquid). Matter has molecules or cells or something of that sort. At least the non living matter can be transformed. Some are harder to transform, while some are easier. Food, water, and air are all matter. You can feel all of them, and they have some weight. Air might have very less weight, but it still has it. My biggest wondering is how or why? Why is matter able to transform? How is it so important? I know there is something much deeper about matter, but I don’t know what it is. That’s my deepest wondering about this unit.