10 Questions
What is a chemical reaction?
A chemical reaction is any chemical change in matter that involves the transformation into one or more substances with entirely different properties.
What is a chemical bond?
A chemical bond is the attractive force that holds the atoms of a molecule together in a compound.
How are chemical reactions represented?
Chemical reactions are represented by chemical equations.
What are the reactants and products in a chemical reaction?
The substances taking part in a reaction are called reactants, and the new substances formed are called products.
What are the characteristics of chemical reactions?
Chemical reactions are characterized by changes that are quite easily observed.
What gas is evolved when zinc reacts with dilute sulphuric acid?
Hydrogen
What gas is produced when potassium chlorate is heated strongly?
Oxygen
What gas is liberated when sodium sulphite is treated with dilute hydrochloric acid?
Sulphur dioxide
What color does the blue colored copper sulphate solution turn into when iron is added?
Light green
What color precipitate is formed when ferrous hydroxide is produced in the reaction between ferrous sulphate and sodium hydroxide?
Dirty green
Explore the process of chemical reactions which involves breaking of chemical bonds between atoms or groups of atoms of reacting substances and rearrangement of atoms to form new substances with different properties. Test your knowledge on the fundamentals of chemical reactions.
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