Synthesis & Friends 5th Period

Ricke 5th Period. MLCHS. 1/22/15

A: Synthesis Introduction

So we all know what the things are called that form a reaction - reactions, and a product. But when you're trying to balance an equation, you're going to need some help, with some coefficients. Lets give out our definitions here -


A reactant is the starting substance in a chemical reaction.


A product is the substance formed during a chemical reaction.

A coefficient is the number written in front of a reactant or product, in a chemical equation; in a balanced equation describes the lowest whole-number ratio of the amounts of all reactants and products.


Now what can you see that causes a chemical reaction? well first as you add all these things into a mixture of chemicals and a graduated tube, you will be able to see some crazy things, like color change, temperature change, gas(es) created, and formation of solid(s).

B: Analysis of Reactions

We analogized some experiments that we were doing in our chemistry class, and here are some results we came across:


  1. A: Color changed and heat/smoke was emitted. B: A solid compound containing water molecules combined in a definite ratio as an integral part of the crystal. Often used in combination. C: Double.


2. 2KI + Pb(NO3)2 -> 2KNO3 + PbI2

There is a color change in this reaction

It is an example of double replacement and when the term “reacts with” is seen as a plus sign in a balanced chemical equation.


3. A: Very bright light. B: you can tell that oxygen needs another oxygen to be able to help balance out if it is alone, and to fuel the flame. C: Synthesis D: 2Mg + 02 → 2MgO


4.A. A gas was produced when they were combined B.Cation is a positively charged ion. C. An anion is a negatively charged ion. D. This experiment would be an example of a single replacement E. The name for the outcome would be ZnCl2+H2 for it.


5.bubbles formed and the flame was reignited

A catalyst is something that is added to the reaction to speed up the process yet it has no effect on the outcome.

Decomposition

MnO2

2H2O2 -> 2H2O + O2

Oxygen



C: Conclusion

Here are some helpful tips to help out with your next future experiment and equation balancing :).


dissolving salt: physical

melting ice: physical

milk turning sour: chemical

burning fireworks: chemical

soda going flat: chemical

frying an egg: chemical

B. meaning experiment # chemical used

(s) identifies a solid state 1 copper (II) sulfate

(l) identifies a liquid state ---------------------------------------------------

(g) identifies a gaseous state 4 zinc and hydrochloric acid

(aq) identifies a water solution 1 copper (II) sulfate and pentahydrate


Everybody who has worked on this project