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secondary 3 | Biology
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Plssss help to explain why the answer is D for this chemistry question I really do not understand thank you very much
Date Posted: 5 years ago
Views: 476
Change in physical state means either boiling/condensation or melting/freezing
happens.
When temperature is changed from -25°C to 45°C,
E which was a liquid at -25°C will boil since the temperature is now higher than its boiling point of -20°C
F which was a solid at -25°C will melt when since the temperature is now higher than its melting point of 40°C.
H which was a solid at -25°C will melt when since the temperature is now higher than its melting point of -20°C.
Only G does not undergo a change of state G was a solid at -25°C, and upon changing the temperature to 45°C, still remains solid since 45°C is still lower than its melting point of 70°C
happens.
When temperature is changed from -25°C to 45°C,
E which was a liquid at -25°C will boil since the temperature is now higher than its boiling point of -20°C
F which was a solid at -25°C will melt when since the temperature is now higher than its melting point of 40°C.
H which was a solid at -25°C will melt when since the temperature is now higher than its melting point of -20°C.
Only G does not undergo a change of state G was a solid at -25°C, and upon changing the temperature to 45°C, still remains solid since 45°C is still lower than its melting point of 70°C
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Hope this helps
Date Posted:
5 years ago
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