Question

3. By what methods--physical or chemical—is it possible to break a compound into its
constituents?
4. What is the base of all plant fibres?
5. In which method of transfer of heat do molecules themselves travel from the hot portion to
the cold portion?
6. If a vegetable tastes bitter, what is it likely to have in it-a base or an acid?
7. Is rusting a physical or a chemical change?
8. Is heat a form of energy or a form of matter?
9. Fill in the blanks: The nearer a place is to the equator the
(warmer/colder) it is
expected to be
0. Humus is found in all layers of the soil. True or false?​

Answer 1

1. by chemical method. because compound can only be breaked through chemicla methods