Match the following scenario to the type of change.
Column A
1.
burning fuel:
burning fuel
2.
cutting paper:
cutting paper
3.
rotting apple:
rotting apple
4.
boiling water:
boiling water
5.
slicing an orange:
slicing an orange
6.
rusting bike:
rusting bike
Column B
a.chemical change
b.physical change
1. burning fuel: a. chemical change
2. cutting paper: b. physical change
3. rotting apple: a. chemical change
4. boiling water: b. physical change
5. slicing an orange: b. physical change
6. rusting bike: a. chemical change
Column A Column B
1. burning fuel a. chemical change
2. cutting paper b. physical change
3. rotting apple a. chemical change
4. boiling water b. physical change
5. slicing an orange b. physical change
6. rusting bike a. chemical change
To determine the type of change for each scenario in Column A, we need to understand the difference between chemical changes and physical changes.
Chemical change refers to a change in which a substance reacts with another substance, resulting in the formation of new substances with different properties. The chemical composition of the original substance is altered during a chemical change.
Physical change, on the other hand, refers to a change in which the appearance or form of a substance is altered, but the chemical composition remains the same.
Now, let's match the scenarios in Column A to the corresponding types of change in Column B:
1. Burning fuel: This involves the chemical reaction of fuel with oxygen to produce heat, light, and carbon dioxide. Therefore, it is a chemical change (a).
2. Cutting paper: Cutting paper changes its shape and size, but it does not alter the chemical composition of the paper. Hence, it is a physical change (b).
3. Rotting apple: The rotting process involves the breakdown of organic matter by microorganisms, leading to a change in the chemical composition of the apple. Therefore, it is a chemical change (a).
4. Boiling water: When water is heated, it changes from a liquid to a gaseous state (water vapor). However, the chemical properties of water remain the same. Hence, it is a physical change (b).
5. Slicing an orange: Slicing an orange changes its physical appearance, but it does not alter its chemical composition. Therefore, it is a physical change (b).
6. Rusting bike: Rusting occurs when iron combines with oxygen in the presence of moisture, leading to the formation of iron oxide. This change involves a chemical reaction, making it a chemical change (a).
So, the matches are:
1. Burning fuel: a. chemical change
2. Cutting paper: b. physical change
3. Rotting apple: a. chemical change
4. Boiling water: b. physical change
5. Slicing an orange: b. physical change
6. Rusting bike: a. chemical change