Answer:
Chopping wood logs
A pot of water o a grate over a burning fire
Explanation:
Physical change is easily reversible. Burning/combustion is a chemical process where substances react rapidly with oxygen: this is usually irreversible.
The marshmallow, roasted food and burned wood all undergo combustion and hence are tagged chemical changes.
Explanation:
The answer is heart
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Redox reaction is the reduction and oxidation reaction. It is a chemical reaction that involves a transfer of electrons. It can mean loss of oxygen (oxidation) or gain of electrons (reduction). Oxydation is the process of where a sustance loses electrons, gains an oxygen atom/s, loses a hydrogen atom/s. reduction is the opposite.
In a redox reaction, one of the reactants must release electrons.
Answer:
Intake, compression, power, and exhaust
Explanation:
A four-stroke cycle engine is an internal combustion engine that utilizes four distinct piston strokes (intake, compression, power, and exhaust) to complete one operating cycle. The piston make two complete passes in the cylinder to complete one operating cycle.
<u>Answer :</u>
Chemical energy - D) Potential energy stored in the bonds between atoms
Electrical energy - C) The movement of an electrical charge
Radiant energy - B) Electromagnetic energy that travels in waves
Thermal energy - A) Internal energy caused by vibrations of atoms and molecules
<u>Explanation :</u>
Chemical energy : It is the type of energy in which the potential energy is stored in the bonds between the atoms.
Electrical energy : It is a type of energy in which the electrical charge are moved.
Radiant energy : It is a type of energy in which the electromagnetic energy travels in the waves.
Thermal energy : It is a type of energy in which an internal energy caused by the vibrations of atoms and the molecules.
