Yes, the law of thermodynamics, or Law of Conservation of Energy
Answer:
A. Moving electrons generate magnetic forces
Explanation:
This is because when electrons or electric current flows in a wire it creates a magnetic field around the wire.
Answer:positive
Explanation: because there are more protons than electrons in the ion
The answer is: [B]: ionic bond .
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If the crucible wasn't covered with a lid the reactants may have produced a gas that was released into the surroundings, or mass may have been lost in the form of water vapour.