In the Chocolate Chip Rock Cycle Lab, once the chips have been moved to the

burner and melted, what rock type is

represented?

A. sedimentary

B. metamorphic

C. igneous

D. clastic

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?