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