Paper 1 chemistry Chemical changes

• Magnesium + oxygen= magnesium oxide
• Magnesium + oxygen = magnesium oxide What has happened to the metal?


  The metal has gained oxygen meaning oxidation has occured.
• Magnesium oxide = Oxygen + magnesium What has happened to the reaction

  Reduction has occurred meaning magnesium has lost oxygen.
• What group is the reactivity series called?

  Alkaline metals
• What is the most reactive metal out of the Reactivity series and how does it react with water?

  Potassium and it is highly reactive with water and reacts vigorously
• What do we react Magnesium, iron, copper and zinc with as they cannot react with water?

  Dilute acids
• What happens to metals when they reactive with water in terms of electrons?

  They loose electrons to form positive ions
• What is the reactivity series order based on+
• What is the reactivity series order based on?

  The reactivity is based on the ability to loose electrons and form an positive ion
• How are unreactive metals found in?

  They are found in the earth as the metal itself
• A more reactive element will push out the less reactive element to form its compound
• What has happened to this equation$magnesium +$$iron oxide=$$magnesium oxide +$$iron$


  The iron atoms have gone through reduction (gained and electron) and magnesium has gone through oxidation (lost and electron)
• What has happened to the carbon and the copper?$carbon +$$Copper oxide=$$carbondioxide +$$copper$


  Copper = Reduction has occurred carbon = Oxidation has occurred
• What is reduction?

  When an atom has gained an electron.
• What is oxidation?

  When and atom has lost and electron
• what has occurred in the following reaction$Mg =$$mg+$$2 +$$2e$


  Magnesium has gone through Oxidation as it has lost electrons