Chemistry

• Bases are substances which release hydroxide ions (OH-) when dissolved in water.
• Acids are substances which release hydrogen ions (H+) when dissolved in water.
• Acids react with metals to produce salts and hydrogen gas
• Acids react with bases to form a salt and water.
• Acids are proton donors (they release hydrogen ions into solution) while bases are proton acceptors (they take up hydrogen ions from solution)
• Strong acids completely ionise in water
• Weak acids only partially ionise in water