Physical Science Review

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Across
  1. 4. Equation: A symbolic representation of a chemical reaction using element symbols and formulas.
  2. 6. The weighted average mass of an atom's protons and neutrons.
  3. 8. An element that is typically shiny, malleable, and a good conductor of electricity.
  4. 9. A substance that takes part in and undergoes change during a chemical reaction.
  5. 11. A substance formed when two or more elements chemically combine.
  6. 14. Electrons in the outermost energy level of an atom that determine its chemical properties.molecule
  7. 17. Change:A change in a substance that does not alter its chemical composition.
  8. 18. A horizontal row in the periodic table.
  9. 21. Positively charged particle found in the nucleus of an atom.
  10. 22. How easily a substance undergoes a chemical reaction, often releasing energy.
  11. 23. A vertical column in the periodic table that contains elements with similar properties.
Down
  1. 1. Two or more atoms bonded together.
  2. 2. Change:A process that results in the formation of new chemical substances.
  3. 3. A pure substance consisting of only one type of atom.
  4. 5. A solid that forms from a solution during a chemical reaction.
  5. 7. A combination of two or more substances that are not chemically bonded.
  6. 10. A representation used to explain the structure or behavior of something, like an atom.
  7. 12. An element that is typically brittle and a poor conductor of electricity.
  8. 13. An element that has properties of both metals and nonmetals.
  9. 15. Negatively charged particle that orbits the nucleus of an atom.
  10. 16. Number: The number of protons in the nucleus of an atom, which determines the element.
  11. 19. The central part of an atom, containing protons and neutrons.
  12. 20. A subatomic particle with no charge, found in the nucleus of an atom.