Which of the following best matches a part of a living cell with the function it performs? 1. cytoplasm: fluid which carries the nucleus and other organelles 2. vacuole: fluid which carries the nucleus and other organelles 3. cytoplasm: directs all of the cell's activities 4. vacuole: directs all of the cell's activities

Which is true of chemicals? a. things containing chemicals always cost a lot of money. b. chemicals are never dangerous. c. chemicals are in many substances in a home. d. chemicals are rarely found on earth.

The enthalpy of formation of water is -285.8 kj/mol. what can be inferred from this statement?

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.