Could you help me with these three Physics questions?

Question

1) Measuring which physical property is most likely to produce the most precise results when trying to identify a substance?

A) luster

B) hardness

C) density

D) viscosity

2. At any given location, the physical properties of a substance do not change.

A) True

B) False

3. A material is ductile, conducts electricity, and is magnetic. The material is a _____.

A) metal

B) nonmetal

C) metalloid

D) impossible to tell

Answer 1

B, B and A

Answer 2

I would say C, B, and A for fairly obvious reasons.

I think this Q shd be under Physical Chemistry