Advertisements
Advertisements
Question
Select the chemical changes from the following list of changes
Respiration in mammals.
Solution
Respiration in mammals is a CHEMICAL change, we breathe in oxygen and breathe out carbon dioxide. It is irreversible and composition changes.
APPEARS IN
RELATED QUESTIONS
Classify the following as chemical or physical change:
Passing of electric current through water, and water breaking down into hydrogen and oxygen gases.
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
Fill in the blank.
A new substance is formed in a ............... change.
Photosynthesis cannot take place at night.
Fill in the blank
Revolution of the earth around the sun is a ________ change.
Classify the following as physical or chemical changes :
- Cooking of food
- Boiling of water
- Cutting of trees
- D0issolving salt in water
- Digestion of food
- Melting of ice
Which of the following are physical changes and which are chemical changes ?
Rusting of iron
State which of the following terms connected with change of state of matter i.e.
(a) Melting
(b) Vaporisation
(c) Condensation
(d) Freezing
pertain to –
- Conversion of a liquid into a vapour or gas.
- Conversion of a liquid into a solid.
- Conversion of a solid into a liquid on heating.
Select the chemical changes from the following list of changes
Breaking of glass
Distinguish physical and chemical changes.
