Which model would represent Newton's law of action-reaction? * A) Toy car rolling down a ramp.
B) Toy rocket being launched.
C) Toy boat floating in the water.
D) Toy tractor being pushed over a hill.

D
I’m not 100% sure but you have to use force/motion to put it into action and it’s reacting to being pushed by moving

B or A I’m not sure but I know it’s one of those. Newton discovered gravity and those are the only two that are related to gravity.

They can measure  the amount of energy gained or lost

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na