Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the...
-
Upload
frederick-harris -
Category
Documents
-
view
212 -
download
0
Transcript of Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the...
![Page 1: Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the reactants and the products.](https://reader035.fdocuments.us/reader035/viewer/2022072012/56649e405503460f94b30f1c/html5/thumbnails/1.jpg)
Counting Atoms!!
Oct 5th 2012
![Page 2: Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the reactants and the products.](https://reader035.fdocuments.us/reader035/viewer/2022072012/56649e405503460f94b30f1c/html5/thumbnails/2.jpg)
Reactants and Formulas
• Write:HCl + NaOH NaCl + H2O
And label the reactants and the products
![Page 3: Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the reactants and the products.](https://reader035.fdocuments.us/reader035/viewer/2022072012/56649e405503460f94b30f1c/html5/thumbnails/3.jpg)
• The law of Conservation of Mass-• the mass of substances in a closed system will
remain constant, no matter what processes are acting inside the system.
![Page 4: Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the reactants and the products.](https://reader035.fdocuments.us/reader035/viewer/2022072012/56649e405503460f94b30f1c/html5/thumbnails/4.jpg)
We know what is a formula
• We have seen that a chemical formula is…• A number of atoms that make up ONE compound
• Ex. Mg2O• So this example will have what number of elements?• Mg:2• O:1• Therefore….2 Mg and 1 Oxygen is the chemical
formula for making the compound= Mg2O
![Page 5: Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the reactants and the products.](https://reader035.fdocuments.us/reader035/viewer/2022072012/56649e405503460f94b30f1c/html5/thumbnails/5.jpg)
But wait….there is more!
• Vocab:• Coefficients- A number in front of a chemical
formula(compound) used to tell the number of compounds.
Ex. (The #2 in 2Pb3O4)
![Page 6: Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the reactants and the products.](https://reader035.fdocuments.us/reader035/viewer/2022072012/56649e405503460f94b30f1c/html5/thumbnails/6.jpg)
![Page 7: Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the reactants and the products.](https://reader035.fdocuments.us/reader035/viewer/2022072012/56649e405503460f94b30f1c/html5/thumbnails/7.jpg)
Subscripts
• Vocab:• Subscripts:A SMALL number written after an element in a
chemical formula telling how many of that element is in the formula.
Ex. FeS2 this two is a subscript
![Page 8: Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the reactants and the products.](https://reader035.fdocuments.us/reader035/viewer/2022072012/56649e405503460f94b30f1c/html5/thumbnails/8.jpg)
Write in IAN please
![Page 9: Counting Atoms!! Oct 5 th 2012. Reactants and Formulas Write: HCl + NaOH NaCl + H 2 O And label the reactants and the products.](https://reader035.fdocuments.us/reader035/viewer/2022072012/56649e405503460f94b30f1c/html5/thumbnails/9.jpg)
Alright, how many total atoms of each
• Mg2P2O7 =
• AuCl3 =
• C4H12O2 =
• 2C3H4
• CaMgSi3O8 =
• CaHPO3 + 3H2O =
• 3CuCl2 =
• Pb3O4 =