Atoms, Elements and Compounds

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Across
  1. 3. building blocks of matter
  2. 5. a strong force of attraction holding atoms together in a molecule or crystal, resulting from the sharing or transfer of electrons
  3. 6. anything that has mass and takes up space
  4. 8. a sample of matter with both definite and constant composition and distinct chemical properties
  5. 10. a pure substance that cannot be broken down into any other substance
Down
  1. 1. formula a set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound
  2. 2. a combination of many different elements, but they are not chemically combined and can be separated physically
  3. 4. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
  4. 7. divide or cause to divide into distinct elements
  5. 9. more than one element has been combined through a chemical reaction to form a new substance