Advertisements
Advertisements
प्रश्न
Select the chemical changes from the following list of changes
Breaking of glass
Advertisements
उत्तर
Breaking of glass is a PHYSICAL change as no change in composition takes place, no new substance is formed.
APPEARS IN
संबंधित प्रश्न
Write short answer.
Sublimation is classified as a physical change. Why ?
State whether the following is physical or chemical change.
Digestion of food —
What are man-made changes ?
State the Differences Between a Physical Change and a Chemical Change.
Two chemical substances X and Y combine together to form a product P which contains both X and Y X + Y P
X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following statements concerning X, Y and P are correct ?
- P is a compound
- X and Y are compounds
- X and Y are elements
- P has a fixed composition
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
Give the reason why the following is considered as chemical changes.
Sulphur when burnt in air evolves a gaseous acidic product.
Fill in the blanks in the following statements using the words given in the box.
| rusted, colourful, substance, chemical, physical, reversible, iron oxide, object |
- Making sugar solution is a ______ change.
- A physical change is generally ______.
- Grinding of wheat grain changes its size. It is a ______ change.
- Iron benches kept in lawns and gardens get ______. It is a ______ change because a new ______ is formed.
Give two examples for the following case:
Physical changes which are not reversible
