Author/s: Orvielle Atanacio, Kimberly Ibañez, and Kyla Ursula
Write a reflection based on lesson 2 and 3 (Atoms, Molecules, and Ions)
Based on the lesson, we understand that atom is the basic unit of a chemical element. It is a particle of matter that uniquely defines a chemical element. It is also the smallest particle of an element that cannot be broken down chemically. Atom have three subatomic particles of an atom the electron, protons and neutrons. The other one is the molecule. It is a group of two or more atoms that might consist of different types of elements (compound). Our teacher showed us the different examples of element molecules as well as compound elements with illustrations. Next is the ions, they are atoms or molecules that have gained or lost one or more of their valence electrons which have a net of positive or negative charges. It has four types: representative metal ions, Transition and Post transitional metal ions, Monatomic nonmetals ions and Polyatomic ions. We also learned how to identify and differentiate them from one another.
We also talked about the three chemical bonds: covalent, ionic and acid and bases. First is the covalent bond which contain two nonmetal bonds that have the same attraction that results to both the nonmetal bond to share the same electrons. Second is the ionic bond, it is where the electrons were transferred into one atom (usually a metal) to another (usually a nonmetal). Finally, the acid and bases that have three (3) major classifications. According to Svante Arrhenius, a Swedish scientist, acids produce H+ while the Base produces OH-.
We also discussed the concept of the Basic Laws of Matter and its different types. One of the laws is the law of conservation of mass which state that an ordinary chemical reaction and the total weight of the reactants is equal to the weight of the product. Next is the Law of Definite Composition and Law of Multiple Proportions wherein two elements are combined to form a compound and the ratio of the elements is always the same. Our teacher also gave us examples using illustrations.
We calculate mass ratios in a sample problem and equations. Also, we learned how to predict whether an atom will form an anion or a cation and the change of the resulting ions with the use of the periodic table. Lastly, we learned on how to get the molecular, empirical and structural formula.
In this lesson, we learned a lot of things that we’ll be able to use in further lessons and discussions.
We hope you learned something from this post. Stay tuned for more information brought to you by Group Silver!
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