Tumblr For School (Probably)

USING TUMBLR FOR SCHOOL!!!! PROBABLY!!!

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Works Cited

Situation 1

Guch. (n.d.). All about covalent compounds. Retrieved from         http://misterguch.brinkster.net/covalentcompounds.html

Situation 2 and 4

N. A. (n.d.). Types of chemical reactions and solution stoichiometry. Retrieved from http://depts.washington.edu/chemcrs/bulkdisk/chem142A_win07/notes_Chapter_04.pdf

Situation 3

N. A. (n.d.). Solvation. Retrieved from https://www.princeton.edu/~achaney/tmve/wiki100k/docs/Solvation.html

N. A. (n.d.). Solvation of a salt molecule. Retrieved from http://cps-www.bu.edu/Wasser/robert/work/node20.html

Situation 5

N. A. (n.d.). The reaction between magnesium and CO2. Retrieved from http://chemed.chem.purdue.edu/demos/main_pages/5.16.html

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Video 8: 

The magnesium reacts with dry ice which the magnesium is ignited. This combustion reaction forms magnesium oxide and carbon. This combustion is very explosive and is not recommended.

Equation: 2 Mg + CO2 → 2 MgO + C

Reaction Classification: Combustion

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Video 7: 

This reaction shows zinc chloride being created from Zinc (s) and HCl (aq) or hydrochloric acid. Notice that the chlorine atoms have a negative charge at the end of the video, because ZnCl2 is an ionic compound. Also, notice that there are water molecules because it is an aqueous solution, and that hydrogen rises as bubbles. 

Equation: Zn (s) + 2HCl (aq) → ZnCl (s) + H2 (g)

Reaction Classification: Single Replacement

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Video 6: 

In this reaction H2O2 (aq) is breaking up into H20 (l) and O2 (g). Notice that the reaction is clearly balanced. And that the oxygen rises as a gas, which forms bubbles on a macroscopic scale. Also notice how there are water molecules, to show that it is an aqueous solution. 

Equation: H202 (aq) → H20 (l) O2 (g)

Reaction Classification: Decomposition

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Video 5: 

In this reaction, Hydrogen Peroxide (s) is dissolving in water to become Hydrogen Peroxide (aq). Notice that the Hydrogen Peroxide does not break up when dissolving in water as it is a covalent compound. 

Equation: H2O2 (s) → H2O2 (aq)

Equation Classification: Solvation

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Video 4: 

This reaction shows the reaction between potassium iodide (aq) and lead (II) nitrate (aq). 

Equation: Pb(NO3)2 (aq) + 2KI (aq) → 2KNO3 (aq) + PbI (s). 

Reaction Classification: Double Replacement

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Video 3: 

This animation shows lead (II) nitrate (s) dissolving in water to become lead (II) nitrate (aq). Notice that the polyatomic ions stay together when dissolving in water. 

Equation: Pb(NO3)2 (s) → Pb(NO3)2 (aq)

Reaction Classification: Solvation

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Video 2: 

This animation shows solid Potassium Iodide is dissolving in water. Notice how the cations and anions are split up by the water. Also note the orientation of the water molecules. 

Equation: KI (s) →KI (aq)

Reaction Classification: Solvation

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Video 1: 

In this reaction the propane reacts with oxygen in a combustion reaction. This means that there is an explosion as the chemicals react with one another. This reaction forms carbon dioxide and water along with a lot of energy.

Equation:   C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O (g)

Reaction Classification: Complete Combustion

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For this you can see that the salt (NaCl)is put into the water and that the electronegative oxygen in the water is attracted to the "electropositive" sodium in the salt. This animation shows the dissolving of the salt into the water. This is when it is evenly distributed into the water.  

THIS WAS THE PRACTICE ANIMATION!!!!