5 Questions
Which of the following is an example of an exothermic reaction?
C + O → CO + 393.5 kJ
Which of the following is a characteristic of a chemical change?
New substances are produced
What happens to the mass of an object during rusting of iron?
The mass increases
Which process results in the absorption of heat energy?
C + O → CO + 393.5 kJ
What is another name for a chemical change?
Chemical reaction
Test your knowledge of chemical changes and reactions with this Class 10 Science Chapter 1 quiz on chemical reactions and equations. Learn about the formation of new compounds, energy changes, and mass changes during chemical reactions.
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