Week 6 Vocabulary

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Across
  1. 5. A substance that cannot be separated or broken down into simpler substances by chemical means
  2. 6. An arrangement of the elements in order of their atomic numbers
  3. 8. The number of protons in the nucleus of an atom
  4. 9. A subatomic particle that has no charge
  5. 10. A subatomic particle that has a positive charge
Down
  1. 1. A subatomic particle that has a negative charge
  2. 2. A horizontal row of the periodic table
  3. 3. The smallest unit of that maintains the properties of an element
  4. 4. A column in the periodic table of the chemical elements
  5. 7. The sum of the numbers of protons and neutrons present in the nucleus of an atom