Is calcium chloride an acid or base

Compare and contrast physical changes with chemical changes.

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas