Mosses growing on surface of rocks, producing pits in rocks. What is it mechanical or chemical?

C6h12o6+6o2 →6co2 + 6h2o+atp

Which liquid would be the most difficult to raise or lower the temperature of A. one with a low density B. one with a high capacity C. one with a high density D. one with a low heat capacity

A solution with low Ph values feels like what? a) slippery b) Taste Sour c) have an - OH group d) turns litmus paper blue

Looking at the Bohr models of atoms offer an explanation as to WHY the atomic size changes as it does for both periods and groups. Periods: Groups:

Critique Maria's laboratory safety procedures.

What are some facts about the element Rutherfordium

Luis set a glass of ice water out side is the sunshine. when he looked at the glass 10 minutes later, the contents had changed. what kind of change happened to the ice water? A. evaperation B. conduction C. chemical change d. sudden change

A substance is considered to have a smaller surface area when ... A. it is a fine powder B. it is in large chunks C. you have a small amount of the substance D. you have a large amount of E. the substance

Which is the noble gas notation for chlorine? A-[Ne] 4s2 4p5 B-[Ne] 3s2 3p5 C-[Ne] 3s2 3p3 D-[Ne] 3p2 3p5

Is argon long hand or noble gas