4.2 Structure Of The Nuclear Atom Answer Key
Question: Dalton theorized that atoms are indivisible, but the discovery of ___ particles changed this theory
Answer: Subatomic
Question: Scientist now know that atoms are made up of electron, which have a ___ charge; ___, which have a positive charge; and ___, which are neutral
Answer: Negative, Protons, Neutrons
Question: The latter two particles are found in the ___ of the atom
Answer: Nucleus
Question: It was ___ who discovered the nucleus of the atom
Answer: Ernest Rutherford
Question: The nucleus, which has a ___ charge, occupies a very small volume of the atom
Answer: Positive
Question: The negatively charged ___ occupy most of the volume of the atom
Answer: Electrons
Question: According to Dalton’s atomic theory, atoms are composed of protons, electrons, and neutrons
Answer: Never True
Question: Atoms of elements are electrically neutral
Answer: Always True
Question: The mass of an electron is equal to the mass of a neutron
Answer: Never True
Question: The charge on all protons is the same
Answer: Always True