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Basic Skills and Photography Class
Chapters 4 & 5
Help with Citations (for any class)
optics and electricity
Organic Chemistry Webquest
Work, Power, & Machines
Add "All Pages"
Writing Chemical Formulas and Balancing Chemical Equations Webquest
This activity goes with Chapters 6 and 7 in your textbook.
Start by reading the following review of how to name compounds.
First lets review how to name compounds.
REMEMBER, if it is ionic (metal + nonmetal), you write the name of the metal first and end the nonmetal with -ide. If you are writing the formula then you have to make the cation and anion charges (also called oxidation numbers) equal zero. For example, potassium sulfide contains the metal cation K with a charge of +1 and the nonmetal anion S with a charge of -2. So we would need 2 +1 for every 1 -2 (+1+1-2=0). The formual would be K
To figure out cation and anion charges look at the periodic table. Group 1A has a +1 charge, group 2A has a +2, group 3A (where Al is) has a +3, skip group 4A because they don't form ions, group 5A has a -3 charge, group 6A has a -2 charge, group 7A has a -1 charge, and group 8A doesn't react.
periodic table group
1A or alkali metals
2A or alkaline earth metals
3A or Aluminum
4A or Carbon Family
5A or Nitrogen Family
6A or Oxygen Family
7A or Halogens
8A or Noble Gases
don't form ions
Transition metal (the short columns in the middle of the table) charges are given to you in the form of Roman numerals. I =+1, II = +2, III = +3, IV = +4.
Polyatomic ions are compounds that have a charge. I will always give you a list of these when you need them.
For covalent compounds (nonmetal + nonmetal) you use prefixes to name the compound. The prefix stands for how many of that atom there are in the compound. You must know the prefixes for the test. For example, carbon dioxide contains 1 C and 2 O's so we write CO
. You name the most metalic element first (further left or if in the same column, further down). If there is only 1 of the first element you do not have to use the mono- prefix but you must use it if there is only 1 of the second element. For example carbon monoxide contains 1 carbon and 1 oxygen (CO).
Now lets practice.
Click on the following link. You will be presented with a series of multiple choice questions. Complete them and click "check answers". Redo any that you missed and ask me for help if you don't understand why you missed them.
Multiple Choice Practice Writing Chemical Formulas
Then complete the following to turn in for a grade.
WRITE THIS PART ON YOUR PAPER!!!!!!!!!!!!!!!!1
Each of the following 3 links will take you to a quiz that contains 4 formulas to write (that is 12 total). Number your paper 1-12 and write the formulas in the order that you come to them. Keep the paper because I will need to make notes on it later in the webquest.
Naming Binary Compounds
Naming Compounds with Polyatomic Ions
Naming Compounds with Transition Metals
Now lets talk about balancing chemical equations.
Click on the following link and follow the directions.
Balancing Chemical Equations Game
WRITE THIS PART ON YOUR PAPER!!!!!!!!!!!!!!!!!1
Now lets talk about the different types of chemical reactions. Number your paper 1-4. Identify each of the following pictures in the link below as synthesis (A+B=AB), decomposition (AB=A+B), single replacement (AB+C=A+CB), or double replacement (AB+CD=AD+CB).
Cartoon Chemistry--Identifying Chemical Reactions
BONUS-----------+10 FOR ANY YOU CAN BEAT! CALL ME OVER TO VERIFY!
Just for fun, see if you can win these games. If you beat any of them let me know (call me over to verify that you did beat it) and I will give you bonus points!!!!
Fill in the Periodic Table Game
Element Symbols Game
Elements that Don't End in "um" Game
Elements in the Body Game
Latin Element Names
Periodic Table Movies (I like this one!)
Single Letter Elements
Shut down your computer and carefully bring it to the laptop cart.
Turn in your paper in the box with your name on it.
help on how to format text
Turn off "Getting Started"