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प्रश्न
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
उत्तर
A change, which alters the composition of a substances,iis known as a chemical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Which of the following are chemical changes?
- Growth of a plant
- Rusting of iron
- Mixing of iron fillings and sand
- Cooking of food
- Digestion of food
- Freezing of water
- Burning of candle
State whether the following is physical or chemical changes.
burning of sugar —
True or false
In a physical change no net energy change is involved.
What is a chemical change ? Give two examples of chemical changes.
Which of the following are physical changes and which are chemical changes ?
Freezing of water
Classify the Following as a Physical Or a Chemical Change.
Curdling of Milk
Fill in the blank with the correct word of the statement given below:
Sublimation of iodine is an example of _________ change.
State which of the following pertain to – chemical changes.
(a) Substance retains its identity
(b) The change is permanent
(c) No new substance is formed
(d) Is easily reversible
(e) Produces one or more new substances by a change in its composition
(f) The change is temporary
(g) The composition and properties of the original substance are not altered.
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
