Reactions of Metals + Acid

• When metals react, they lose electrons to form positive ions.
• If a substance gain oxygen in a reaction, it has been oxidised.
• if a substance loses oxygen in a reaction, it has been reduced.
• What is the sign that the reaction of metal with water is working?

  It fizzes, gives off hydrogen gas.
• Ores are naturally occurring rocks that contain metals or metal compounds in sufficient amounts to make it worthwhile extracting them.
• In a displacement reaction a more reactive element takes place of a less reactive element in a compound.
• Acids are compounds that, when dissolved in water, release H+ ions
• H2SO4 is sulfuric acid
• HNO3 is nitric acid
• HCI is hydrochloric acid
• Alkali are compounds that, when dissolved in water, release OH- ions
• How can we check an Acids PH level?

  Using an universal indicator.
• A pH scale is how acidic or alkaline something is
• Define what a base is?

  Any substance that has a pH greater than 7
• Defind what a alkaline is?

  A base that is dissolved in a aqueous solution to form a solution with a ph greater than 7
• What does reacting an acid and Base produce?

  Salt and water, for example HCI + NaOH --> NaCI + H20
• Fill them in

  A)

  B)

  C)

  D)

  
• What are the products of a reaction between metal and an acid?

  Salt + Water
• What are the products of a reaction between metal hydroxide and an acid?

  Salt and water
• What are the products of a reaction between metal oxide and an acid?

  Salt + water
• What are the products of a reaction between metal carbonate and an acid?

  Salt + water + carbon dioxide
• • acid + carbonate → salt + water + carbon dioxide.
• • acid + base → salt + water.
• • acid + metal → salt + hydrogen.
• • acid + carbonate → salt + water + carbon dioxide.