Grade+8+chemistry

Chemistry

We're almost done Grade 8! We are on our last unit of the year: Chemistry! Here's the unit planner to help you follow along.

Here are the powerpoints that we've seen up until now in class:

  

Make sure you've written you 1-20 element quiz!



__Lesson 5__: Metal and non metal practical Here's the assignment rubric and worksheet  

 Here's the jeopardy game that we played in class;  <span style="font-family: Georgia,serif; font-size: 140%;">And here's a summary of all of the properties of metals and non metals: <span style="font-family: Georgia,serif; font-size: 140%;">

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<span style="font-family: Georgia,serif; font-size: 140%;">Lesson 8: Design practical for metals and non metals

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<span style="font-family: Georgia,serif; font-size: 140%;">Here's the worksheet we completed in class: <span style="font-family: Georgia,serif; font-size: 140%;">and the link with the [|answers to the review sheet]

<span style="font-family: Georgia,serif; font-size: 22.4px;">Our final assignment: <span style="font-family: Georgia,serif; font-size: 22.4px;">

<span style="font-family: Georgia,serif; font-size: 140%;">Here is the template for the cards should you to use them (remember you are expected to provide more information than is shown on the cards here... they are only meant to give you an idea of the layout required). <span style="font-family: Georgia,serif; font-size: 140%;">

<span style="font-family: Georgia,serif; font-size: 140%;">Here are some websites that can help you: <span style="font-family: Georgia,serif; font-size: 140%;">http://www.ptable.com/ <span style="font-family: Georgia,serif; font-size: 140%;">http://www.lenntech.com/periodic/elements/ <span style="font-family: Georgia,serif; font-size: 140%;">https://www.rsc.org/periodic-table

<span style="font-family: Georgia,serif; font-size: 140%;">Please review these videos about ionic and covalent bonding

<span style="font-family: Georgia,serif; font-size: 140%;">media type="custom" key="24880196"

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<span style="font-family: Georgia,serif; font-size: 140%;">Terms and Definitions
<span style="font-family: Georgia,serif; font-size: 140%;">[|Chemical Bond]- A chemical bond is a force that holds atoms together.

<span style="font-family: Georgia,serif; font-size: 140%;">[|Ionic Bond] - A ionic bond is a chemical bond that it made by losing or gaining electrons and having the atoms. This causes the opposite <span style="font-family: Georgia,serif; font-size: 140%;">ions to attract and stay together. Only a metal and a nonmetal can bond this way.

<span style="font-family: Georgia,serif; font-size: 140%;">[|Covalent Bond] - Covalent bonds use a chemical bonding and can only be done by two non-metals. Covalent bonds share electrons and when each of the atoms share 1 electron, 2 electrons, 3 electrons, it is called Single bonding, Double bonding, and triple bonding, respectively. Also, atoms that bond to themselves do so with covalent bonds. This creates a strong bond between them.

<span style="font-family: Georgia,serif; font-size: 140%;">[|Electron Dot Diagram]- An electron dot diagram is a diagram that represents the amount of electrons in an atom of an element. The <span style="font-family: Georgia,serif; font-size: 140%;">amount of electrons is displayed by dots or crosses around the symbol of the element.

<span style="font-family: Georgia,serif; font-size: 140%;">[|Cation]- A cation is when a neutral atom loses an electron, the atom becomes positive and becomes a cation.

<span style="font-family: Georgia,serif; font-size: 140%;">[|Anion]- An anion is when a neutral atom gains an electron, the atom becomes negative and becomes an anion.

<span style="font-family: Georgia,serif; font-size: 140%;">[|Compound]- A compound is two or more different elements that bond together by chemical bonds. When the atoms bond together they <span style="font-family: Georgia,serif; font-size: 140%;">change the number of electrons in their outer shells and therefore change their properties

<span style="font-family: Georgia,serif; font-size: 140%;">Helpful Images and Illustrations
<span style="font-family: Georgia,serif; font-size: 140%;">Dia. 1 - Single Covalent Bond - This is where 2 or more atoms combine covalently by sharing only one electron. <span style="font-family: Georgia,serif; font-size: 140%;">Dia. 2 - Double Covalent Bond - This is where 2 or more atoms combine covalently by sharing 2 electons. <span style="font-family: Georgia,serif; font-size: 140%;">Dia. 3 - Triple Covalent Bond - This is where 2 or more atoms combine covalently by sharing 3 electrons.

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<span style="font-family: Georgia,serif; font-size: 140%;">Fig. 1: This is a picture of an Ionic Bond. Notice how the atom moves from one element to the other and they are both charged. This causes <span style="font-family: Georgia,serif; font-size: 140%;">the elements to stick together.

=<span style="font-family: Georgia,serif; font-size: 140%;">Bonding Practice Questions =

<span style="font-family: Georgia,serif; font-size: 140%;">Follow the steps that were used in class. Make sure to show the change in the number of electrons from one atom to the <span style="font-family: Georgia,serif; font-size: 140%;">other. Don't forget you can use more than one atom of each electron.

<span style="font-family: Georgia,serif; font-size: 140%;">Covalent or Ionic Bonds?:
 * 1) <span style="font-family: Georgia,serif; font-size: 140%;">NaBr
 * 2) <span style="font-family: Georgia,serif; font-size: 140%;">CaS
 * 3) <span style="font-family: Georgia,serif; font-size: 140%;">H2O
 * 4) <span style="font-family: Georgia,serif; font-size: 140%;">HCl
 * 5) <span style="font-family: Georgia,serif; font-size: 140%;">KCl
 * 6) <span style="font-family: Georgia,serif; font-size: 140%;">MgO
 * 7) <span style="font-family: Georgia,serif; font-size: 140%;">LiCl
 * 8) <span style="font-family: Georgia,serif; font-size: 140%;">CBe
 * 9) <span style="font-family: Georgia,serif; font-size: 140%;">CO2
 * 10) <span style="font-family: Georgia,serif; font-size: 140%;">N2
 * 11) <span style="font-family: Georgia,serif; font-size: 140%;">MgI
 * 12) <span style="font-family: Georgia,serif; font-size: 140%;">O2
 * 13) <span style="font-family: Georgia,serif; font-size: 140%;">CaF2
 * 14) <span style="font-family: Georgia,serif; font-size: 140%;">KBr

<span style="font-family: Georgia,serif; font-size: 140%;">Here's a nice link that summarizes the periodic table and its properties <span style="font-family: Georgia,serif; font-size: 140%;">http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/atoms_elements/activity.shtml

[|More explanations of bonding and practis][|ing]

<span style="font-family: Georgia,serif; font-size: 140%;">It's that time of year again..... final exams!! Here are the topics that you should review:

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