Interpretation: To determine the chemical change and physical change.
Concept Introduction: In Chemical change always one or more than one new substance(s). It is irreversible and the original substance cannot recover.
In Physical change, no new product is formed. It is easily reversible, and the original substance is recovered.
Answer to Problem 110A
Physical change:
- Melting of solid wax.
- Vaporisation of melted wax into vapor.
Chemical change:
Conversion of wax near the flame burn into new substances like carbon dioxide, carbon shoot, water vapor, light, and heat
Explanation of Solution
The one chemical change that occur burning the candle which is shown in the picture is converting wax near the flame burn into new substances like carbon dioxide, carbon shoot, water vapor, light, and heat.
The two physical changes while occur burning of the candle which is shown in the picture is given below,
- Melting of solid wax.
- Vaporisation of melted wax into vapor.
Chapter 10 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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