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