객관식
How does heat energy from the Sun reach the Earth?
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8. Thermochemistry
Nature of Energy
객관식
Which of the following situations best illustrates chemical energy being converted to another form of energy?
A
A candle burning and producing light and heat
B
Ice melting in a warm room
C
A ball rolling down a hill due to gravity
D
A mirror reflecting sunlight
검증된 단계별 안내1
Understand that chemical energy is the energy stored in the bonds of chemical compounds, which can be released or transformed during a chemical reaction.
Identify which situations involve a chemical reaction where bonds are broken and formed, leading to energy conversion.
Analyze the option 'A candle burning and producing light and heat' as it involves combustion, a chemical reaction where chemical energy is converted into light and heat energy.
Recognize that 'Ice melting in a warm room' is a physical change involving heat transfer but no chemical energy conversion.
Note that 'A ball rolling down a hill due to gravity' and 'A mirror reflecting sunlight' involve mechanical and light energy, respectively, but not chemical energy conversion.
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