Chemistry Vocab

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Across
  1. 2. a group of elements whose properties can change between a metal and nonmetal
  2. 3. the small, dense region consisting of protons and neutrons at the center of an atom
  3. 4. Ttwo (or more) atoms joined – or bonded – together
  4. 7. Gasses the element group on the far right side where all the elements are a gas
  5. 8. a state of matter where molecules are free flowing, have a fixed volume
  6. 9. The basic unit of chemical element found in everything, living and nonliving.
  7. 10. a state of matter where molecules will expand to fill the entire container, have neither a shape nor volume
  8. 13. a common element, a natural gas, makes up 75% of the mass of earth, the lightest element
  9. 15. Mass Number The number of protons plus the number of neutrons.
  10. 16. Table the chart that holds all the elements names and basic information about each one
  11. 19. a state of matter where molecules are grouped together, have a fixed shape
  12. 20. Negatively charged subatomic particle in an atom
  13. 22. the 1 or 2 letters representing an element on the periodic table
  14. 23. The simplest substances and cannot be broken down, located on the periodic table.
Down
  1. 1. Positively charged subatomic particle in an atom
  2. 5. Molecules that have bonds between two different types of atom.
  3. 6. Neutrally charged subatomic particle in an atom
  4. 11. Number An atom’s number of protons – and therefore electrons, as they are equal.
  5. 12. Point the temperature at which a solid will turn to a liquid and stay in that state
  6. 14. A lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.
  7. 16. Property A characteristic of matter that can be observed and measured without changing the chemical identity of the sample. (Ex: color, hardness, boiling point)
  8. 17. Property A characteristic or behavior of a substance that may be observed when it undergoes a chemical change or reaction (Ex. flammability, toxicity, chemical stability)
  9. 18. Point the temperature at which the substance transitions from a liquid to the gaseous phase
  10. 21. a common element, a colorless, odorless, tasteless gas essential to living organisms, being taken up by animals, highly reactive nonmetal