During a lab investigation a scientist heats a solid substance. The scientist observes that the solid
has two different melting points. The scientist
is able to separate the two resulting liquids.
Which statement best classifies the original solid
substance?
A.
It was an atom.
B.
It was a mixture.
0.
It was an element.
D. It was a compound.

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .

The lewis diagrams for magnesium and fluorine are shown below. what is the correct chemical formula for magnesium fluoride? a. mgf b. mg2f c. mgf2 d. mg2f3