An atom that has a negative four charge will have one of the following?

a. 4 more protons than electrons
b. an equal amount of protons and electrons
c. 4 more electrons than protons
d. 2 more neutrons than protons

Which best explains why an iceberg floats?

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?