acids and bases

• Acidic solutions have pH values less than 7.
• Basic (alkaline) solutions have pH values greater than 7.
• Neutral solutions have pH values equal to 7.
• an acid is a substance that ionizes to produce hydrogen ions,(H+)when dissolve in water.
• 1. acids taste sour
• 2. acids conducts electricity in aqueous state
• 3. acids change blue litmus paper to red
• 4. acids are corrosive (destroy and damage other substances)
• acids react with: [BMAC]

  • Bases
  • Metal
  • Alkalis
  • Carbonate
• metal + acid --> salt + hydrogen
• test for hydrogen gas:

  ~ Place a lighted splint in the presence of the gas