Advertisements
Advertisements
Question
Give two examples for the following case:
Physical changes which are reversible
Advertisements
Solution
- Folding of paper
- Melting of ice
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.
Tick the most appropriate answer
2. Melting of ice is a
- reversible change
- irreversible change
- chemical change
- none of these
Tick (√) the correct alternative from the choice given for the following statement
Which one of the following is volatile in nature ?
Write true or false
A natural change can also be a desirable change.
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
Give a reason why
Change of seasons is a periodic change while the change of weather is a non-periodic change.
State which of the following 1 to 5 pertain to – A: Physical Change B: Chemical change :
- Sublimation.
- Fermentation.
- Liquefaction or condensation.
- Magnetization.
- Respiration.
Give the reason why the following is considered as chemical changes.
An iron nail kept open in the atmosphere rusts.
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
