Question

1. choose all that apply.

which two are properties of all metals?
good conductor of heat and electricity
luster
malleable
hard
dull

Explanation:

Metals have free electrons which allow them to conduct heat and electricity well. Also, metals have a shiny appearance (luster) due to the way light interacts with their electrons. Some metals like sodium are not hard and some like mercury (in liquid state) are not malleable. Dull is a property of non - metals.

Answer:

good conductor of heat and electricity, luster