Which physical properties can be used to differentiate between metals and non-metals?

A) Malleability
B) Conductivity
C) Transparency
D) Solubility

so what is the answer?

The answer is A) Malleability, B) Conductivity, and D) Solubility. These physical properties can be used to differentiate between metals and non-metals. Metals are typically malleable (able to be hammered or pressed into shape without breaking) and have high conductivity (ability to conduct heat and electricity). Non-metals, on the other hand, are generally not malleable and have lower conductivity. Solubility refers to the ability of a substance to dissolve in a solvent, which can also vary between metals and non-metals.

you can only pick one

In that case, the correct answer would be B) Conductivity. Conductivity is a key characteristic that can be used to differentiate between metals and non-metals. Metals are generally good conductors of heat and electricity, while non-metals are poor conductors.

A) Malleability

B) Conductivity
D) Solubility