Chapter 2, Problem 10RQ

Distinguish between each of the following pairs of terms: Neutron and proton Atomic number and mass number Atomic weight and mass number

The atomic number on an element tells us the number of

Chlorine is an element with the symbol Cl. Draw and label atomic structure of chlorine indicating the number and locations of protons, neutrons and electrons in one atom of chlorine.

Which of the following combinations describes the electron in the modern model of an atom? O negative charge and located in orbitals surrounding the nucleus Opositive charge and located in orbitals surrounding the nucleus negative charge and located in the nucleus Ono charge and located in the nucleus

Carbon-14 is a radioactive material. It contains 6 protons and 8 neutrons. During the process of Carbon-14 decay, one of its 8 neutrons becomes a proton and an electron is formed in the process. Based on this information, select all that apply. The mass number is unchanged by the decay of Carbon-14. The mass number is changed by the decay of Carbon-14. After decay the atom is still Carbon. After decay the atom is not Carbon.

Which of the following is not a fundamental subatomic particle that forms elements? Which of the following is not a fundamental subatomic particle that forms elements? electrons protons nucleus neutrons

a) Identify the following as element (atomic or molecular), compound or mixture. b) Explain your reasoning and draw a sample of these substances containing 5 particles of that particular material. c) What would be the mass of 5 particles of that particular material? Show your work! H20 N2 C2HSOH Iodine gas

Iodine has 37 known isotopes.  Therefore, the atomic mass has a range of 108-144 amu. Which of the following statements concerning iodine is correct? A) The isotopes of iodine have between 55 and 91 protons. B) An atom of iodine can have between 55 and 91 neutrons. C) The isotopes of iodine will always have the same number of neutrons, but the protons can vary. D) The isotopes of iodine have between 108 and 144 neutrons, but the number of protons will not vary.

If we removed a neutron from an atom, what would happen to the atom? Group of answer choices: a) its mass would change b) it would have a positive charge c) it would become a different element d) it would become polar e )it would have a negative charge