Step 1: A few spoons of sugar are dissolved in water to prepare a concentrated sugar syrup.
Step 2: The sugar syrup is heated on low flame till it caramelizes.
Choose the correct option.
Step 1 is a physical change and Step 2 is a chemical change
Let's analyze each step in the given scenario to determine what kind of change it represents.
Step 1 Analysis: Dissolving Sugar in Water
- This process involves dissolving sugar (a solid) in water to form a sugar syrup.
- It is a reversible process, meaning that the sugar can be retrieved by evaporating the water.
- The chemical composition of the sugar does not change; only its physical state changes from solid to dissolved form within the solution.
Therefore, Step 1 is a physical change because it involves a change in the physical state but not in the chemical identity of the substance.
Step 2 Analysis: Heating the Sugar Syrup
- Upon heating, sugar undergoes caramelization, which is a process where sugar molecules break down and chemically transform, changing both their flavor and color.
- This process is not easily reversible. Once sugar caramelizes, it cannot be changed back to its original state without significantly changing the chemical structure.
Therefore, Step 2 is a chemical change because it involves the transformation of sugar molecules into a new substance with different properties.
Conclusion
Based on the analyses above, the correct option is: Step 1 is a physical change and Step 2 is a chemical change.
Important Questions from Change of state
- Latent heat is the energy required to:
The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its melting point. The melting point of a solid is an indication of
The melting temperature of a solid is usually considered to be _________ the freezing point of the corresponding liquid.
At the triple point
- While ice melts at $0^\circ C$, its temperature :
