This post is an Introduction to Ionic Formula Writing, beginning with the simpler formulas and worksheets, my later post getting into transition metals.
Here's an 11-minute video providing the basics of formula writing:
Here's an 11-minute video providing the basics of formula writing:
This is a good explanation but it does not use the Criss-Cross Method to determine the subscripts, which I'm very used to using. Here's a short video using this method:
Just to summarize: Cations are the ions of metals formed by losing electrons and have a positive electric charge. Anions are ions of nonmetals formed by gaining electrons and have a negative electric charge.
There's a minor mis-statement in this video -- teachers try to be perfect but little mistakes are made.
Here is a worksheet just for binary ionic formula writing:
http://chemsite.lsrhs.net/ChemicalBonds/handouts/binary_ionic_practice.pdf
This worksheet contains several pages, topics which I will address later -- you can pick and choose which pages to use in class:
http://www.epasd.k12.pa.us/cms/lib/PA09000081/Centricity/Domain/154/Writing_Formulas__Naming_Compounds_student.pdf
Next Friday, I will continue Ionic Formula writing with polyatomic ions and transition metals.
Mole Day is October 23rd, next Thursday! I am going to post a few Mole Day activities on Monday, 10/20.
I posted a Mole Town Map on January 10, 2014 if you want to check that out.
I have just added a Topic List to help you to find past Blog entries you're looking for. I hope it helps!
Buy my lab book "Chemistry on a Budget" -- it is available for $20 at amazon.com or $23 at lulu.com:
http://www.amazon.com/Chemistry-Budget-Marjorie-R-Heesemann/dp/0578129159/ref=sr_1_1?s=books&ie=UTF8&qid=1389410170&sr=1-1&keywords=chemistry+on+a+budget
http://www.lulu.com/shop/marjorie-r-heesemann/chemistry-on-a-budget/paperback/product-21217600.html
This book contains 13 labs using consumable materials purchased from local stores. There are two versions of each lab, one with a ten-question conclusion and one with directions for a full lab report. This way the teacher has the option! Each lab is two pages to allow for one two-sided handout.
Have a good weekend!
There's a minor mis-statement in this video -- teachers try to be perfect but little mistakes are made.
Here is a worksheet just for binary ionic formula writing:
http://chemsite.lsrhs.net/ChemicalBonds/handouts/binary_ionic_practice.pdf
This worksheet contains several pages, topics which I will address later -- you can pick and choose which pages to use in class:
http://www.epasd.k12.pa.us/cms/lib/PA09000081/Centricity/Domain/154/Writing_Formulas__Naming_Compounds_student.pdf
Next Friday, I will continue Ionic Formula writing with polyatomic ions and transition metals.
Mole Day is October 23rd, next Thursday! I am going to post a few Mole Day activities on Monday, 10/20.
I posted a Mole Town Map on January 10, 2014 if you want to check that out.
I have just added a Topic List to help you to find past Blog entries you're looking for. I hope it helps!
Buy my lab book "Chemistry on a Budget" -- it is available for $20 at amazon.com or $23 at lulu.com:
http://www.amazon.com/Chemistry-Budget-Marjorie-R-Heesemann/dp/0578129159/ref=sr_1_1?s=books&ie=UTF8&qid=1389410170&sr=1-1&keywords=chemistry+on+a+budget
http://www.lulu.com/shop/marjorie-r-heesemann/chemistry-on-a-budget/paperback/product-21217600.html
This book contains 13 labs using consumable materials purchased from local stores. There are two versions of each lab, one with a ten-question conclusion and one with directions for a full lab report. This way the teacher has the option! Each lab is two pages to allow for one two-sided handout.
Have a good weekend!
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