The greenish color of plant cells comes from

a. the cell membrane

b. chloroplasts

c. ink

How many covalent bonds does carbon form in neutral compounds?

Why is an element considered a pure substance?

Electrons are emitted from a conductor when the conductor is A. bombarded by high-speed electrons. B. subjected to a small voltage. C. cooled rapidly. D. exposed to weak light.

Which noble gas is closest to magnesium

The electrons that are responsible for forming a chemical bond are called

What is the element 3O2 name

Why sulphur used for food preservation?

How would a solution that is labeled 5.0 molar be similar to one labeled 5.0 molal?

Calculate the percentage by mass of nitrogen in ptcl2 (nh3) 2.

Below are the structures of three fatty acids, palmitic acid, stearic acid, and oleic acid. what combination of these fatty acids could you use to make a fat that is liquid at room temperature?