What is the term for molten material found below earth's surface? lava basalt magma gabbro

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?