Unit Test

Grade 9s wrote a unit test on the periodic table today.

Periodic TableReview

Grade 9s used today's class time to do review unit 6 work in order to prepare for tomorrow's unit test on the periodic table.

Frog Dissection

Grade 9 students joined the Grade 10 class for the first part of a frog dissection. Students worked in pairs and observed and labelled the external features of a grass frog. They dissected a leg and noted the flexor and extensor muscles. They then opened up, examined and labelled the head and mouth parts. We opened up the body cavity in preparation for tomorrow when we will examine the internal organs.
Grade  9 are reminded to study unit 6 on the periodic table in preparation for Wednesday's unit test.

Carbon

Today we learned that charcoal, graphite, and diamonds are all made of carbon. Grade 9s described their physical characteristics and the differences in the organization of their carbon atoms. We also had a go at electroplating today using graphite and copper. Students are asked to complete the practice questions for this lesson and to study for the unit test which takes place on Wednesday.

Bohr-Rutherford Diagrams

We reviewed how to find the number of neutrons in the most common isotope of an element today. We then learned how to draw Bohr-Rutherford diagrams of atoms. Students have been assigned drawing Bohr-Rutherford Diagrams of the first 20 elements. They also need to complete questions 1 - 5, and 8 of p. 240 of the textbook. Grade 9s will be writing a unit test on the periodic table on Wednesday, January 28.

Atomic Number, Mass Number, and Isotopes

In science class we took up yesterday's homework on atomic theories. We then began a new lesson. Students learned that the atomic number describes the number of protons in an atom and that the number of neutrons can be found by subtracting the atomic number from the mass number. We also learned about isotopes, which fascinated the Grade 9 students. They reluctantly left the class with their brains buzzing.

Students are asked to complete the learning tracker about atomic theories for homework.

Electron Orbits

We finished up yesterday's lesson on atomic theories. Today we heard about the contributions of Chadwick and Bohr to our understanding of the structure of the atom. Students also learned about planetary and Bohr-Rutherford models of the atom.
Students are to complete the remaining atomic theory questions for homework.

Atomic Theories

Students shared their period 7 paragraphs with their classmates today. They also conducted peer reviews and gave each other suggestions on how to improve their paragraphs.
We then had a lesson about atomic theories.

Students are reminded to bring their lab report from Friday's class on chemical families and Q. 1, 2, and 5 of atomic theories

Group 1 & 2 Metals

In yesterday's science class, Grade 9 students watched YouTube clips that demonstrated the physical properties of some of group 1 & 2 metals as well as their reactions with water. Students recorded their observations and analysed what they saw. Their reports on this lesson is due Monday, January 19 along with their Mendeleev puzzles and period 7 element paragraph.

Patterns in the Periodic Table

Grade 9s learned about chemical families and the chemical and physical properties of each family. They also learned about reactivity trends in periods of the table. We reviewed the work Dmitri Mendeleev did on the periodic table, including predicting elements that had not yet been discovered.

Homework
Complete Q. 1 -11 on p. 225
Complete Q a) - I) on p. 219

Conductivity, Combustibility, Reactivity, & Melting Point

Grade 9s finally finished up the lab portion of their investigation into the physical and chemical properties of household substances. Today was the highlight of the 3 days as students got to work with an open flame and try burn their samples.

Chemcial and Physical Properties of Household Items Cont.

Grade 9s continued their investigation into the chemical and physical properties of household substances. Today students measured mass and volume of their samples, calculated density, and checked for the solubility in water of each substance.

Physical and Chemical Properties of Household Items

Grade 9s wrote a quiz to show their knowledge and understanding of the periodic table. They then completed a self-assessment on the metal detective investigation report they handed in today. We began an new activity where students will investigate the physical and chemical properties of household items. Students got as far as describing hardness and colour. We will continue this investigation on Monday.

Metal Detectors

Grade 9s enjoyed a was a hands on class today. They worked on describing the properties and testing samples of metals and non metals for magnetism and electrical conductivity. The completed report on this investigation is due tomorrow.

Back to School

Grade 9s reviewed what we learned about the periodic table before the Christmas Break. We focused on the properties of metals and non-metals in preparation for an investigation students will be conducting tomorrow. Students began the write up of their lab report (question, hypothesis, procedure). They are asked to complete the write up of the table we began in class for homework.