Our objective is to study combination reactions.
Before performing the experiment, let’s find out what combination reactions are!
A combination reaction is a general category of chemical reactions. It may be defined as a chemical reaction in which two or more substances combine to form a single substance under suitable conditions.
Combination reactions are also known as synthesis, because in these reactions new substances are synthesized.
The general equation that describes a combination reaction is:
What are the types of combination reaction?
Combination reactions are of three types.
Similarly, non-metals may react with highly active metals to form covalent compounds. Example, sulphur reacts with oxygen gas to form gaseous sulphur dioxide
Most combination reactions are exothermic in nature. Why?
Combination reactions involve the formation of new bonds and this process releases a large amount of energy in the form of heat.
Let us discuss some more examples of combination reactions.
In this reaction, quick lime reacts with water to form slaked lime (calcium hydroxide, Ca(OH)2).
The reaction between quick lime and water is highly vigorous as well as exothermic.
Coal burns in air to form carbon dioxide gas.
Hydrogen burns in the presence of oxygen to form water in the form of steam. Upon cooling, it becomes liquid.
So, let’s do a combination reaction between water and quick lime…
Cite in Scientific Research:
Nedungadi P., Raman R. & McGregor M. (2013, October). Enhanced STEM learning with Online Labs: Empirical study comparing physical labs, tablets and desktops. In Frontiers in Education Conference, 2013 IEEE (pp. 1585-1590). IEEE.
Cite this Simulator: