Chemistry

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Across
  1. 4. The Temperature measured in the Kelvin Scale is called _______ temperature
  2. 7. an ion consisting of one carbon bonded to three oxygen atoms or a compound containing this ion
  3. 8. It is used to measure the Ph level of a substance?
  4. 9. What compound is a common component of air pollution on the ground level, but is essential in the upper atmosphere to protect life on earth?
  5. 10. covalent bond between atoms in which one atom provides both electrons for the bond?
  6. 11. What is the common name for calcium sulphate?
Down
  1. 1. A device used to measure the amount of moisture in the atmosphere is called a _________
  2. 2. It is a natural process, which converts a refined metal to a more chemically stable form, such as its oxide, hydroxide, or sulphide. It is the gradual destruction of materials (usually metals) by chemical and/or electrochemical reaction with their environment
  3. 3. the simplest form of alcohol
  4. 5. The metal which is yellow in colour and is an alloy of copper and zinc?
  5. 6. The isotopes of an atom have the same atomic number but different mass numbers, name the isotope of hydrogen that has 2 neutrons?