1. A substance which speeds up a chemical reaction without itself getting affected is known as a   Counter Ion   Cation   Catalyst   Nucleus   Hint Half-n-half Clue   2. Solubility of a substance in a solvent usually increases with an increase in temperature.   True   False   3. A substance that absorbs moisture is known as   Amorphous   Hygroscopic   Hydrophobic   Hydrophilic   Half-n-half Clue   4. Catalysts often speed up certain chemical reactions.   False   True   5. Acids change a litmus paper from   Green to White   Blue to Red   Red to Blue   Red to Purple   Half-n-half Clue   6. Fill in the missing word Acid + _______ = Salt + Water   Oxygen   Non Metal   Base   Metal   Half-n-half Clue   7. Lemon juice is   Metallic   Neutral   Acidic   Basic   Half-n-half Clue