Chemistry, 16.02.2021 23:20, smithscarpetcaour4es
There are many types of chemical reactions. Four are described below:
Synthesis: Two or more reactants combine to form a single product. For example, 2H2 + O2 → 2H2O. (Synthesis reactions are also called combination reactions.)
Decomposition: One reactant breaks down to form two or more products. For example, 2KCl → 2K + Cl2.
Single replacement: An element reacts with a compound to form another element and compound. For example, Zn + 2HCl → ZnCl2 + H2.
Double replacement: Two compounds react to form two different compounds. For example, FeS + 2HCl → FeCl2 + H2S.
Identify the following examples as one of the four choices (from above). In these examples, I’m using letters (A, B, C, D etc) to represent chemical symbols more simply.
Example: X + YZ -> XZ + Y, you would say this is an example of a single replacement reaction.
ABCD -> A + CD + B
AD + CB -> AC + BD
AC + BD -> ACBD
D + EG -> DG + E
Define an Endothermic Reaction:
Define an Exothermic Reaction:
In the following formula, label the Reactants and the Products:
FeS + 2HCl → FeCl2 + H2S
Restate the Law of Conservation of Matter:
Use the Law of conservation of matter to explain what is wrong with the following equation
H2O2 --> H2O + O2 :
pH refers to the acidity of a solution (or alkalinity).
1- 6.9 = Acidic 7= Neutral 7.1 - 14 = Alkaline
Substance pH Acid, Alkaline or Neutral?
Amonia 11 Alkaline
Vinegar 3
Cola 2.5
Water 7
Baking Soda 8
Blood 7.5
Coffee 4
Answers: 2
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There are many types of chemical reactions. Four are described below:
Synthesis: Two or more reacta...
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