An unknown substance turns blue litmus paper to red. which additional test could be used to confirm the substance’s identity?
it should turn phenolphthalein from colorless to pink because it is a base.
it should turn phenolphthalein from pink to colorless because it is a base.
it should turn methyl orange to orange because it is an acid.
it should turn methyl orange to red because it is an acid.

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

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.

Which three statements represent the benefits of performing experiments using computer simulations?