Fill in the blanks:

(a) A new substance is always formed in a ______ change.

Q. A ..................change is a change in which a new substance is formed whose properties are different from those of the original substances.

Q. Fill in the blanks by choosing an appropriate option.
When sugar is dissolved in water, it undergoes a ___(i)___ change but if sugar is heated in a test tube over the Bunsen burner flame, it first melts, turns brown and finally turns ___(ii)___. The new substance formed is ___(iii)__ and the change is a ____(iv)____ change.

Q. A physical change is always characterised by the formation of a new substance.

Q.

In a ___ change, the molecular structure of a matter changes and a new substance is formed.

Q.

Question 15

Fill in the blanks in the following statements using the words given in the box

(a) Making sugar solution is a …………………. change
(b) A physical change is generally ……………………..
(c) Grinding of wheat grain changes its size. It is a …………….. change.
(d) Iron benches kept in lawns and gardens get ……………… it is a …………….
(e) change because a new ……………… is formed