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1. The diagram below models the energy involved in a reaction that changes methane gas and oxygen into carbon dioxide and water.
2. Carbon dioxide is an example of a molecule where the component atoms of carbon and oxygen are held together by chemical bonds. Which statement correctly describes the reason for these chemical bonds?
3. When burning fuel for cooking, the pan and the food absorb energy and heat up. In this process, which form of energy is chemical energy converted into?
4. Which of the following statement/s about the energy involved in a chemical reaction is/are correct?
5. Burning coal results in several energy transformations to generate electricity. Which statement is correct about the chemical energy stored in chemical bonds between atoms when coal is burned?

Respuesta :

Answer:

1- It is greater than the energy absorbed in breaking the bonds. The excess is converted to thermal energy.

2- The nuclei and electrons of the atoms are attracted to each other.

3- thermal energy

4- II and III only

5- It converts to thermal energy.

Explanation:

took the quick check

Conservation of energy states that the total energy of a isolated system remains constant.

  • Nuclei and electron attracts each other.
  • Thermal energy.
  • Chemical energy can be converted into another form of energy and the energy is needed to break bonds.
  • It converts to the thermal energy.

What is conservation of energy?

Conservation of energy states that the total energy of a isolated system remains constant.

The given statement are,

  • 1. The diagram below models the energy involved in a reaction that changes methane gas and oxygen into carbon dioxide and water-For this the diagram is not given.

  • 2. Carbon dioxide is an example of a molecule where the component atoms of carbon and oxygen are held together by chemical bonds-Ionic bond formed when the two opposite charged atom attracts each other. Thus, The option 2 is correct which is, nuclei and electron attracts each other.

  • 3. When burning fuel for cooking, the pan and the food absorb energy and heat up. In this process, which form of energy is chemical energy converted into-The pan absorbs the heat  from the heat source. This heat is then transferred to cook the food in the form of thermal energy. Thus the 3 is the correct answer which is thermal energy.

  • 4. The following statement/s about the energy involved in a chemical reaction is/are correct-Only option 3 and 4 are correct. Chemical energy can be converted into another form of energy. The energy is needed to break bonds.

  • 5. Burning coal results in several energy transformations to generate electricity-Burning coal help us to generate electricity by converting into the thermal energy. Hence the option 3 is the correct option, which is it converts to the thermal energy.

Thus the correct options are,

  • Nuclei and electron attracts each other.
  • Thermal energy.
  • Chemical energy can be converted into another form of energy and the energy is needed to break bonds.
  • It converts to the thermal energy.

Learn more about the conservation of energy here;

https://brainly.com/question/24772394

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