What happens when chlorine atom gains an electron in its outer energy shell?

The relative positions of protons, neutrons, and electrons in an atom

In the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of them is a reactant?

Calculate the percent activity of the radioactive isotope iodine-131 remaining after 3 half-lives.

Which statements about subatomic particles are false? (select all that apply.) protons and electrons have charges of the same magnitude but opposite sign. protons have about the same mass as neutrons. some atoms don't have any protons.

What are repelled in the VSEPR theory? A. Other molecules B. Opposite charges C. Protons in nuclei D. Electron pairs

Which is an example of a genetic disorder caused by errors that occur during meiosis? A. malaria B. color blindness C. Down syndrome D. sickle-cell anemia

How many grams of precipitate will be formed when 20.5 mL of 0.800 M CO (NO3) 2 reacts with 27.0 mL of 0.800 M NaOH in the following chemical reaction? CO (NO3) 2 (aq) + 2 NaOH (aq) → CO (OH) 2 (s) + 2 NaNO3 (aq)

How do bacteria get their food? Select all that apply. manufacture it themselves obtain it from decaying organic matter obtain it parasitically from living organisms obtain it from the soil and atmosphere

A test done under standard conditions is referred to as what in chemistry? A. STP B. Control C. Rate Constant D. Kinetics E. None of the above

Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. what is the volume in liters of 3.46 kg of ethylene glycol?