Advertisements
Advertisements
Question
What type of energy changes is associated when ice melts?
Solution
- Physical change
- Endothermic (heat energy is absorbed)
APPEARS IN
RELATED QUESTIONS
Tick the most appropriate answer.
5. Photosynthesis requires
- heat energy.
- wind energy
- sunlight.
- sound energy
A burning candle shows both physical and chemical changes. Explain ?
Fill in the blank
Changes that occur in nature are called ______
Which of the following are physical changes and which are chemical changes ?
Classify the following as a physical or a chemical change.
Manufacture of salt from sea water
Read the paragraph and note down the various types of changes it mentions.
It was nearing six o'clock in the evening. The sun was setting. A breeze was blowing. Leaves on the tree were shaking. Sahil was sitting in the courtyard, rolling balls of wet soil, and shaping them into various toys. Then he felt hungry and went into the house. Mother made a dough from wheat flour and fried purees. While eating hot purees, his attention was drawn outside the window. It had started raining. There was lightning, too. Sahil was enjoying his dinner in the dim light.
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
Select the correct answer from the choice given below to complete the sentence
A change in which a substance retains its identity is a
______ change.
Give the reason why the following is considered as chemical changes.
An iron nail kept open in the atmosphere rusts.
Which of the following is not a physical change?