Advertisements
Advertisements
Question
Change is the law of nature which occurs in everyday life.
State when a substance [i.e. matter] undergoes a kind of change.
Advertisements
Solution
Change is the law of nature that occurs in everyday life. A substance [i.e. matter] undergoes a kind of change when subjected to energy changes.
The matter is said to undergo certain changes when energy is added to the matter or removed from the matter.
Examples of Changes are:
- Ice melts on supplying heat to it.
- Milk changes into curd when a little curd is added to hot milk.
APPEARS IN
RELATED QUESTIONS
Fill in the blank.
Changes that occur in nature are called ........................
State the various conditions that favour the process of evaporation.
Name two reversible changes.
Give two examples of periodic changes.
Give four reasons why the burning of a magnesium ribbon in the air is considered a chemical change.
Select the chemical changes from the following list of changes
Respiration in mammals.
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
______ is the substance that is dissolved in a solvent.
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
What kind of change is shown by tearing of paper?
