A chemical reaction is a process in which groups of different atoms combine to form a new substance. Photosynthesis, digestion, ripening of fruits, burning of paper, etc. are some of the processes that change the composition of the substance as well as its chemical nature and create a new substance, so such processes are called chemical reactions. The following changes can occur in a chemical reaction. Such as a change in color of matter, change in the state of matter, change in heat energy, absorption or release of energy. There are also motions in chemical reactions, and their study is also very important. The speed of a reaction means the speed at which the concentration or pressure of the substances involved is changing as a result of that reaction. The difference in the speed of different reactions can be seen. Some reactions occur at very rapid speeds while some reactions are very slow. Take this amazing quiz about Chemical Reaction.
1. The chemical reaction 2 H₂O -----> 2 H₂ + O₂ is called.....
A. Single displacement reaction
B. Decomposition reaction
C. Synthesis reaction
D. All of above
2. The chemical reaction 8 Fe + S₈ -----> 8 FeS is knowne as.
A. Decomposition reaction
B. Single displacement reaction
C. Synthesis reaction
D. Double displacement reaction
3. If iron combines with oxygen to make iron oxide, the reactants are…
A. Iron oxide
B. Iron and oxygen
C. Iron and iron oxide
D. Oxygen and iron oxide
4. The substance produced by a chemical reaction called....
A. Reactant
B. Resultant
C. Product
D. All of above
5. Who first determined that the masses of the reactants and products must be the same?
A. Galileo
B. Lui pasture
C. Archimedes
D. Lavoisier
6. What is the meaning of Arrow in a chemical reaction?
A. The equation is balanced.
B. Reaction is happening
C. The two sides are equal
D. None of these
7. In water, the mass of oxygen is 8 times that of hydrogen, no matter how the water was created. This is known as the Law of ____________.
A. Multiple Proportions
B. Mass Conservation
C. Definite Proportions
D. No anyone of above
8. Which kind of chemical reaction involves photons from the light?
A. Decomposition reaction
B. Synthesis reaction
C. Single displacement
D. Photochemical reaction
9. What does a catalyst do to a chemical reaction?
A. Speeds up the rate of reaction
B. Stops the reaction
C. Starts the reaction
D. None of these
10. A substance that is used up during a chemical reaction called.......
A. Product
B. Resultant
C. Reagent
D. Reactant
11. Which kind of chemical reaction involves oxygen and another substance producing water and carbon dioxide?
A. Combustion
B. Synthesis reaction
C. Decomposition reaction
D. Single displacement
12. Which scientist firstly uses the chemical reaction scientifically?
A. Archimedes
B. Lui pasture
C. Zabir ibn Haiyan
D. None of these
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