Physical Science Crossword: Sections 3A and 3B Yeoone Im/Nov 14, 2024/PS 211 B

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Across
  1. 3. Ions that have more electrons than protons have an excess of negative charge
  2. 5. Atoms of the same element with differing numbers of neutrons.
  3. 7. A new branch of physics was born, one that explored the behavior of matter and energy at the atomic and subatomic levels.
  4. 9. A subatomic particle that is located in the atom’s nucleus, carries a single positive electrical charge.
  5. 10. Ions that have more protons than electrons have an excess of positive charge
Down
  1. 1. The mass number is the total number of protons and neutrons in an atom's nucleus.
  2. 2. An element is the weighted average of the masses of all the naturally occurring isotopes of that element.
  3. 4. A second kind of subatomic particle found in the nucleus, carries no electrical charge.
  4. 6. The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity and its position on the periodic table.
  5. 8. The smallest of the main subatomic particles, each electron carries a single negative electrical charge.
  6. 11. An atom or molecule that has gained or lost electrons, resulting in a net electric charge.