Which of the following statements is NOT true regarding chemical reactions?
1
Compounds that interact to produce new compounds are called reactants whereas the newly formed compounds are called products.
2
In a chemical reaction, a chemical change must occur which is generally observed with physical changes like precipitation, heat production, color change etc.
3
The rate of reaction doesn't depends on concentration of reactants,because they have fixed no of atoms in each molecule.
4
Rusting of iron, and fermentation of wine are examples of chemical changes in everyday life.