Chemical Reactions 5

In this upcoming week, we will continue to learn about the different types of chemical reactions. Since the beginning of this unit, we have learned about double-replacement reactions that form a solid, acid-base reactions that form water, and RedOx reactions that result in the transfer of electrons. Since the exam is on Thursday, it is doubtful that we will learn much more in this unit, so hopefully I can use my time wisely this week and make sure I know the material to the best of my ability.

Chemical Reactions 4

Last week in class, we learned about several different types of reactions to prepare for the unit test that we took on Thursday. The type that we spent the longest time learning about were redox reactions. This stands for reduction and oxidation. During this type of reaction, electrons are transferred from a metal to a non-metal. If a species loses electrons, it is oxidized and is the reducing agent.

Chemical Reactions 3

This past week in class, we learned about acid/ base reactions. The driving force of these reactions is water, and they always produce a salt and water as products. We also learned about strong and weak acid and bases:

Strong Acids:
-Produe H+
-Protonate completely
-HCl, HBr, HI
-If oxygens outnumber hydrogens by 2 or more

Strong Bases:
-Contain an OH- anion
-Disassociate completely
-All group 1 and 2 metals and the -OH anion

Chemical Reactions 2

This past week in class, we started learning about our next unit, Chemical Reactions. You can tell when a chemical change is occurring thanks to sensory clues. These are things such as:
-color change
-a solid forms
-bubbles form
-heat/flame is produced or abso


In a chemical reaction equation, there will be a small letter(s) after each compound, telling you what state it's in. These are:
-g (gas)
-l (liquid)
-s (solid)
-aq (aqueous)

Here is an example of what one of these equations might look like:
rbed

Chemical Reactions 1

Today in class, we learned about RedOx reactions. Unlike the other reactions we have been learning about, RedOx reactions use the transfer of electrons as their driving force. If an element loses electrons, then it is considered oxidized, and if it gains electrons, it is considered reduced. These reactions are single-replacement reactions in which a metal will replace a metal and a nonmetal will replace a nonmetal. They will be of use in the future when we have to predict the products of a chemical reaction that uses the transfer of electrons as their driving force.