how we determine there are be chemical reactions are observed
Answers
Answer:
How can I tell if a chemical reaction is occurring? A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.
Explanation:
A chemical reaction is the change of a substance into a new one that has a different chemical identity.
How can I tell if a chemical reaction is occurring?
A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Absolute confirmation of a chemical change can only be validated by chemical analysis of the products!
Take a look at the following image and describe what you see going on? What are the key indicators of a chemical change? The key is observation!
Click on Sherlock Holmes as a warm to test your powers of observation!
Oh …..don’t forget to check out the barking dog!
Types of Chemical Reactions
There are many different types of chemical reactions. Chemists have classified the many different reactions into general categories. The chemical reactions we will explore are a representation of the types of reactions found in each group. There is a general description of the main reaction types and specific examples provided in the selection boxes.
Synthesis Reaction (Combination Reaction)
In a synthesis reaction, two or more substances combine to form a new compound. This type of
reaction is represented by the following equation.
A + B AB
A and B represent the reacting elements or compounds while AB represents a compound as the product.
The following examples are representative of synthesis reactions.