Question 3 of 7 Which property of a mineral determines whether it can scratch a piece of
calcite?
a. streak
b. luster
c. hardness
d. reactivity

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

Displacement is the slope of a velocity vs. time graph a. true b. false