Chemical Reaction Reflection

 

 

 

1.What are common reactions around you and how can you change them?

 

 

Ans: There are a variety of common reations around us. Photosynthesis is one of the common reation. Plants convert carbon dioxide(CO2) and water(H2O) into food(glucose) and oxygen. It's one of the most common everyday chemical reactions and also one of the most important, since this is how plants produce food for themselves and animals and convert carbon dioxide into oxygen. Digestion is another common reaction. Thousands of chemical reactions take place during digestion. As soon as you put food in your mouth, an enzyme in your saliva starts to break down sugars and other

carbohydrates into simpler forms your body can absorb. While that, Hydrochloric acid in your stomach reacts with food to break it down. Most of the chemical reaction are irreversable. For example, burning fire on a wooden stick.

 

 

2.Why do we classify reactions?

 

 

Ans: We classify reactions so we know what will the product be, based on the reactants. Being able to predict the products of a reaction allow us to design reaction to produce the desired products but also allows us to have some expectation of what will happen before starting a new chemical reaction. Therefore, we can plan accordingly to have the appropriate safety equipment as well as plans to deal with the waste.

 

 

3.Why are chemical reactions balanced?

 

 

Ans: Chemical reactions are balance because of the law of conservation of mass. The law of conservation of mass states that the mass of the reactant before the reaction is equal to the mass of the product after the reaction. In other word, mass is not created or destroyed. It stays the same. What goes into the reaction comes out the same. The second reason for this is that during a chemical reaction, atom are conseved. The total number of electrons is conserved. So in the chemical equation, there must be the same amount of each atom on both side.

4.How does what you learned connect to the real world?

 

Ans: What connects to the real world is that I can use this chapter's skills and apply it in the next chapter. For instance, like learning about ozidation number and use the skill in predicting the product. Also, I can see the world in the other way and understand what is happening in the reaction(e.g. bubbles=gas).

5.How did you develop or grow as a student through this unit?

 

Ans: Through this unit, I developed as a student by studying hard and try to remember all the things that I was suppose to. I also depends on the study guide and Khan Acedmy website and that is really helpful. At first when I need to balance the equation and predicting the product, I thought that I would have failed in the test. However, I think that I already did my best and I hope that the impossible beomes possible.

 

6.As you look at the work you have completed throughout this unit, what are you strengths?

 

 

Ans: I think that my strength are on the reaction rate lab and the analyzing part of the chapter test. For the reaction rate lab, I gave a very specific details on the materials, as well as the conclusion. Which I don't know if it's too specific or not? For the chapter test, I think that my strenght are on part A and B. This is because I took a lot of time memorizing and understanding from my notes. Plus, I did an additional research on some of the question in the study guide. 

 

 

7.As you look at the work you have completed throughout this unit, what do you think you could improve?

 

 

Ans: Maybe I can explain more by giving a specific reasons? I think I did pretty well on this chapter. However, managing time during the test is still my problem. I usually left about only 5 minutes on part C and that is because I spent too much on part B. Next time, what I could do can be keeping track of the time constantly or just do part C first!

 

 

8.Included evidence (Images, Essays, Reports, Posters, etc)