Category Archives: Science 10

Class of: 09-Mar-2016.

Today we covered Section 10.2: Radioactivity and the Nucleus (p. 280) and Section 10.3: Radioactive Decay (p. 284).

Learning Objectives:

• Students will be able to describe the structure of the nucleus based on the Rutherford experiment.
• Students will be able to change a nucleus based on the type of radioactive decay it undergoes: alpha, beta, or gamma.

When radioactive elements were first discovered, people thought it was great that they were releasing “energy.” They didn’t realize that the energy came from deadly radioactivity, and so used elements like radon in all sorts of things, such as: foods, chewing gum, and health tonics. One man drank about 1,400 tonics before his jaw… fell off! Ouch.

Please work through the following review problems:

p. 283 #1-14

p. 289 #1-19

Class of: 07-Mar-2016.

Today we started Unit C: Radioactivity. We began with Chapter 10: Radioactivity and the Atom and covered Section 10.1: Radioactivity and its History (p. 275).

Learning Objectives:

• Students will be able to explain the role of cathode rays and X-rays in the discovery of radioactivity, and place those rays on the electromagnetic spectrum.

As an interesting factoid, all of the flags planted on the moon from the Apollo missions are still standing today. However, because of the radiation from the sun they have turned completely white! This is because the radiation breaks the covalent bonds holding together the coloured pigment molecules. Talk about a sunburn!

For the test tomorrow, 08-Mar-2016, please make sure you know the following:

• Metalloids vs metals vs non-metals, parts of the atom, chemical families, and Bohr diagrams.
• Pure substances vs. mixtures, pH and acid/base indicators.
• Naming/writing formulas of molecular and ionic compounds.
• Predicting reaction products and balancing.
• Reaction rate, Kinetetic Molecular Theory, and Collision Theory.

Please work through the following review problems:

p. 279 #1-13

Class of: 02-Mar-2016.

Today we had a review period! Please take the time to make sure you are getting ready for the following:

• Chapter 8 Lab Report due tomorrow, Thursday, 03-Mar-2016.
• Chapter 9 Lab will take place tomorrow, Thursday, 03-Mar-2016.
• Organic Debate will take place on Friday, 04-Mar-2016.
• Chapter 9 Quiz on reactions next week on Monday, 07-Mar-2016.
• Unit B Test on chemistry next week (exact date TBD by the end of today).

Check out the procedures and marking check-list here: Sci 10 9.L Checklist

Class of: 01-Mar-2016.

Today we covered Section 9.4: Rates of Chemical Reactions (p. 250).

Learning Objectives:

• Students will be able to calculate reaction rate based on the amount of products produced per unit time.
• Students will be able to explain how reaction rate changes based on different aspects of collision theory (concentration, surface area, temperature, and catalysts).

Today we had a demo of elephant toothpaste! Check out the Wikipedia article on the subject. It’s a great resource: https://en.wikipedia.org/wiki/Elephant_toothpaste

The decay of hydrogen peroxide happens constantly at room temperature, producing water and oxygen gas, but it only happens very slowly. When you add a catalyst, potassium iodide, the reaction suddenly goes much faster and you get a tonne of foam! Your body is full of catalysts known as enzymes, which help you do lots of things in a timely manner, like digest your food.

Please work through the following review problems:

p. 256 #1-13

Class of: 29-Feb-2016.

Today we covered Section 9.3: Types of Chemical Reactions (p. 239).

Learning Objectives:

• Students will be able to identify reaction types based on their reactants and predict the products.

Please work through the following review problems:

p. 248 #1-6

Class of: 26-Feb-2016.

Today we covered Section 9.2: Writing and Balancing Chemical Equations (p. 235).

Learning Objectives:

• Students will be able to balance a chemical equation.

Have a fantastic weekend!

Please work through the following review problems:

p. 238 #1-8

Class of: 25-Feb-2016.

Today we covered started Chapter 9: Investigating Chemical Reactions. We began with Section 9.1: Describing Chemical Reactions (p. 231).

We also had a quiz today on Chapter 8!

Learning Objectives:

• Students will be able to describe what a chemical reaction is and name reactants and products.
• Students will be able to demonstrate understanding of the conservation of mass and atoms that takes place within a chemical reaction.

Please work through the following review problems:

p. 234 #1-9

Class of: 24-Feb-2016.

Today we will be doing a lab on acids and bases! Check out the report and marking check-list here: Sci 10 8.L Checklist [FIXED]

You also have a quiz on Thursday, 25 Feb!

You will need to know how ions are released in solution from an ionic compound. You will need to know how to draw Lewis diagrams for single atoms and for covalent compounds. You will need to draw structural formulas for simple organic compounds. You will also need to know how to classify compounds as organic or not, specifically which definitions you use.