1.3: Visual models
What to look for in pictures of compounds/reactions:
1. Diatoms.
* HONClBrIF.
2. State of matter
* Solids should be ordered
* Gasses, liquids, and aqueous solutions disordered
* Aqueous ionic compounds have separated ions
3. Balanced charges
* Total number of positive charges must equal number of negative charges.
4. Stoichiometry
* Has matter actually been conserved?
* The amounts used and made must be in the proper proportion.
* If there is a limiting reagent, there must be some of the excess reagent still present in the product mixture.
5. Strong vs weak acid.
* Strong should be shown as H+ and A-. Weak as HA.
6. Orientation
* Especially important for water molecules surrounding dissolved compounds/ions.
1. Diatoms.
* HONClBrIF.
2. State of matter
* Solids should be ordered
* Gasses, liquids, and aqueous solutions disordered
* Aqueous ionic compounds have separated ions
3. Balanced charges
* Total number of positive charges must equal number of negative charges.
4. Stoichiometry
* Has matter actually been conserved?
* The amounts used and made must be in the proper proportion.
* If there is a limiting reagent, there must be some of the excess reagent still present in the product mixture.
5. Strong vs weak acid.
* Strong should be shown as H+ and A-. Weak as HA.
6. Orientation
* Especially important for water molecules surrounding dissolved compounds/ions.
