The answer is B as isotopes are different versions of the same chemical element containing the same amount of protons and electrons but different amounts of neutrons.
Answer:
magnesium chloride (no prefixes)
Riley can either change the surface area of the object or can change the slipperiness of the material.
Answer:
solute is that we disolve in solvent
solvent is in which we dissolve solute
I think the answer is A but i'm not sure