Chemistry

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Across
  1. 5. one of the strongest acid
  2. 7. it is state where in concentration of reactants and products do not change with time
  3. 9. used to detect acidity and basicity of a substance
  4. 10. lightest element in the periodic table
Down
  1. 1. common salt
  2. 2. it do not react with other elements
  3. 3. a common topic in physics and chemistry related to heat engine
  4. 4. commonly known as baking soda
  5. 6. hardest substance in the word
  6. 8. process of converting solid into liquid