Monday, January 28th
Today in science: The main theme for today’s science lesson was “the chemical structure of two acids.” Students were asked to draw a single molecule of carbonic acid, which is commonly found in our blood, as well as a single molecule of oxalic acid, which is commonly found in many vegetables we eat. In each case, students were asked to count the number of atoms and chemical bonds (both single and double bonds) needed to form one molecule of each of the two acids. The two color-coded diagrams created by Dr. M in class, which students were asked to copy onto two separate pieces of drawing paper, can be seen in the Notes Portal. At the end of the lesson, Dr. M briefly described tonight’s homework assignment (see below).
Homework: With the 4 acid drawings drawn in class during the last two science lessons in front of them, students have been asked to look for and name 5 similarities between the 4 acids (citric, acetic, carbonic, oxalic). Each similarity should be stated as a complete sentence. This assignment needs to be completed on a single, properly titled and labelled, whole/full sheet of lined notebook paper (please, no half-sheets).
Tuesday, January 29th
Today in science: Although not the original plan, the main themes for today’s science lesson were “the structure of atoms” and “the periodic table.” These two topics came up today when talking about Monday night’s homework assignment, which was collected by Dr. M at the start of today’s lesson. A student question about the double bond that forms between some carbon and oxygen atoms in acids gave Dr. Merritt the opportunity to introduce students to not only the purpose of the periodic table (also known as the periodic table of the elements), but also some of the hidden ‘secrets’ provided by the numbers found within the table. Today’s class ended with Dr. M holding the periodic table and (badly!) singing a few lines from a traditional but well-known American spiritual song, “He’s Got the Whole World in His Hands.”
Homework: There is no science homework tonight.
Wednesday, January 30th
Today in science: The main theme for today’s science lesson was “measuring acidity and alkalinity.” After drawing a fifth and final drawing to add to our acid molecule(s) collection (hydrochloric acid), students began learning about ways in which scientists test liquids to determine whether or not a substance is acidic, alkaline (or basic), or neutral. The “Litmus Paper Test Results” table created by Dr. M in class, which students were asked to copy onto a piece of drawing paper, can be seen in the Notes Portal. At the end of the lesson, Dr. M briefly described tonight’s homework assignment (see below).
Homework: Students were asked to complete the assignment described at the end of class, which is further explained on this downloadable handout. If a student does not have a functioning printer at home (or lost the handout given to them by Dr. M), they can simply draw the table on a separate piece of paper or on the back of the paper used for notes in today’s class.
Thursday, January 31st
Today in science: The main theme for today’s science lesson was “potion making,” otherwise known as determining the strength of acidity and alkalinity. A healthy chunk of time discussing safety practices when using corrosive liquids in the science lab were discussed at the start of the lesson. These important safety rules have now been added to the Notes Portal. Next, students were asked use 0.1 M hydrochloric acid (HCl), 0.1 M sodium hydroxide (NaOH), and universal indicator solution to create as many colors as seen in the color scale below by mixing different amounts of the three liquids in a plastic spotting tray.
Before the end of the lesson, Dr. M asked students to take a photo(s) of their spotting trays so as to create a visible record, or ‘proof,’ of their success(es).
Homework: There is no science homework during the long weekend.
Friday, February 1st
Today in science: Unfortunately, A period science class does not meet on Fridays.