When comparing equal volumes of a stronger and weaker acid, what would be observed? a) the strong acid would taste sour; the weaker acid would taste sweeter. b) the electrical conductivities would be different c) the effects on blue litmus paper would be different. d) they would produce the same amount of hydrogen gas in the same amount of time when reacting with zinc

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.