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Question 1:

Which of the following is an example of chemical energy?

A) A rolling ball
B) A burning candle
C) A stretched rubber band
D) A spinning top

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Explanation: The correct answer is B) A burning candle. Chemical energy is the energy stored in the bonds of chemical substances. In this case, the burning candle releases the stored chemical energy through a chemical reaction known as combustion.

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Question 2:

What is chemical energy?

A) The energy of motion
B) The energy associated with temperature
C) The energy stored in chemical bonds
D) The energy transferred by electromagnetic waves

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Explanation: The correct answer is C) The energy stored in chemical bonds. Chemical energy is a form of potential energy that is stored in the bonds between atoms and molecules. It is released or absorbed during chemical reactions.

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Question 3:

Which of the following is an example of chemical energy transformation?

A) Melting of ice
B) Evaporation of water
C) Combustion of gasoline in an engine
D) Reflection of light from a mirror

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Explanation: The correct answer is C) Combustion of gasoline in an engine. Chemical energy transformation refers to the conversion of chemical energy into other forms of energy through chemical reactions. In this case, the combustion of gasoline in an engine converts the chemical energy stored in gasoline into mechanical energy to propel the vehicle.

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Question 4:

Which of the following is a source of chemical energy?

A) Sunlight
B) Wind
C) Fossil fuels
D) Nuclear power

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Explanation: The correct answer is C) Fossil fuels. Fossil fuels, such as coal, oil, and natural gas, are sources of chemical energy. They contain stored energy from ancient organic matter that can be released through combustion or other chemical reactions.

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Question 5:

Which of the following is an example of chemical energy used in daily life?

A) A battery powering a smartphone
B) Sunlight heating a room
C) Wind turning a windmill
D) Water flowing in a river

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Explanation: The correct answer is A) A battery powering a smartphone. Chemical energy is commonly used to store and provide energy for various devices and appliances. In this case, the battery in a smartphone contains chemical energy that can be converted into electrical energy to power the device.