Newton's third law states that every action has an equal and opposite reaction. The action and reaction forces are pairs of opposing forces.
In the given examples all three obey Newton's third law.
B) Action force: John pulls the door handle
Reaction: door handle gets pulled
C) Action force: Tire pushes on road
Reaction: The road pushes on the tire, vehicle moves
D) Action force: Exhaust pushes out of a rocket
Reaction: Rocket is pushed forward
Ans A) All these are examples of Newtons third law
The reaction that releases energy as heat is called an Exothermic reaction. This reaction does obey the law of conservation by preserving the energy present in the molecule and converting it to thermal heat to maintain it's from. Most reactions obey the law of conservation of energy.
The mass decreases but the volume stays the same
Answer:
Explanation:
Magnesium and oxygen forms ionic bonds between them. In the formation of an ionic bond, a metal will lose an amount of electron to the non - metal. This way two ions are produced and the electrostatic attraction between the two ions results in the formation of the ionic bond.
Magnesium : 2 8 2
Oxygen : 2 6
For magnesium to be stable and be isoelectronic with neon, it must lose two electrons to form an ion:
Mg → Mg²⁺ + 2e⁻
For oxygen to be stable it must gain two electrons:
O + 2e⁻ → O²⁻
Mg²⁺ + O²⁻ → MgO
So the attraction between the ions results in the formation of the MgO.
