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GCSE: Patterns of Behaviour

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  • Marked by Teachers essays 45
  • Peer Reviewed essays 15
  1. Peer reviewed

    Temp labreport

    5 star(s)

    Therefore, increasing the temperature increases the energy between the particles and makes them move around a lot more and collide more often. Hypothesis: - The rate of reaction has a positive relationship with the temperature of the Hydrochloric Acid. Apparatus:- 1) Test tube 2) Rubber tube (a.k.a. delivery tube) 3) Measuring cylinder X2 [1-10ml, 1-100 ml] 4) Rubber Bung 5) Stopwatch 6) HCL - 150ml 7) 5x 3 cm of magnesium ribbon 8) Trough full of water 9) Beaker - 400ml 10)

    • Word count: 851
  2. Peer reviewed

    Formula of Magnesium Oxide

    4 star(s)

    mass of crucible and magnesium after heating: 15.18g ? mass of magnesium before heating: 0.90g ? mass of magnesium oxide: 0.97g ? mass of oxygen: 0.07g Changes occurring during the reaction: � Magnesium stripe glowed and burned bright orange � Sparks appeared on the surface of the magnesium stripe � Started to shrink and change into white powder form but still glowing This shows that magnesium has reacted with oxygen to form magnesium oxide, a white powder. Appearance of contents at the end of experiment: � White powder � Not in a shape of a coil Number of moles of magnesium and oxygen in magnesium oxide: moles = mass moles = mass molar mass molar mass

    • Word count: 847
  3. Peer reviewed

    Rate of Reaction Lab

    4 star(s)

    The variables are as follows: Independent Variable: I shall be changing the surface area of the Calcium Carbonate to prove or disprove that it actually makes a difference to the rate of reaction. Dependant Variable: The Carbon Dioxide given off will be my dependant variable in this experiment. Control: I shall try to control the amount of Calcium Carbonate and acid in each experiment, so it is as close to being the same as possible. Apparatus: -Beaker -Measuring Cylinder -Calcium Carbonate -Scales -Hydrochloric Acid (0.4M)

    • Word count: 705
  4. Peer reviewed

    displacement reactions of metal

    4 star(s)

    Iron will displace copper only as it is a less reactive metal. And copper will not be able to displace any metals because it is a very weak metal. * Method 1. I had placed the three pieces of the four different metals on a tile containing twelve holes. 2. Then I added the aqueous solution that is magnesium solution, iron solution, zinc solution & copper solution onto the different metals.

    • Word count: 414

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