https://padlet.com/gess/substancesgrade8 Made with good vibes en-us 2018-05-07 23:47:46 UTC 2026-06-01 02:21:29 UTC hello@padlet.com mrsk10 https://padlet.com/gess/substancesgrade8/wish/258739242 https://www.youtube.com/watch?v=0Bt6RPP2ANI

• Introduce  one chemical reaction 

• Identify reactants and products in that reaction
• Identify reactants and products as either elements or compounds
• Present the evidence in each case that a chemical reaction has occurred
• Give chemical word equations for the reaction.
• Model the reaction showing the rearrangement of atoms.
• Discuss the advantages of the reaction. 
• Discuss the disadvantages.]]> 2018-05-07 23:49:53 UTC https://padlet.com/gess/substancesgrade8/wish/258739242 meerakapoor1 https://padlet.com/gess/substancesgrade8/wish/258754398 2018-05-08 01:26:14 UTC https://padlet.com/gess/substancesgrade8/wish/258754398 kieran_ward https://padlet.com/gess/substancesgrade8/wish/258754407 2018-05-08 01:26:15 UTC https://padlet.com/gess/substancesgrade8/wish/258754407 https://padlet.com/gess/substancesgrade8/wish/258754485 2018-05-08 01:26:49 UTC https://padlet.com/gess/substancesgrade8/wish/258754485 https://padlet.com/gess/substancesgrade8/wish/258754556 2018-05-08 01:27:22 UTC https://padlet.com/gess/substancesgrade8/wish/258754556 louie_kent https://padlet.com/gess/substancesgrade8/wish/258754560 2018-05-08 01:27:22 UTC https://padlet.com/gess/substancesgrade8/wish/258754560 luke_skywalkerr596 https://padlet.com/gess/substancesgrade8/wish/258754766 2018-05-08 01:29:06 UTC https://padlet.com/gess/substancesgrade8/wish/258754766 arjanrijkens https://padlet.com/gess/substancesgrade8/wish/258754796 2018-05-08 01:29:20 UTC https://padlet.com/gess/substancesgrade8/wish/258754796 https://padlet.com/gess/substancesgrade8/wish/258755139 2018-05-08 01:31:26 UTC https://padlet.com/gess/substancesgrade8/wish/258755139 louie_kent https://padlet.com/gess/substancesgrade8/wish/258760350 we copy righted this reaction ]]> 2018-05-08 02:02:46 UTC https://padlet.com/gess/substancesgrade8/wish/258760350 aadya_tiwari1_1 https://padlet.com/gess/substancesgrade8/wish/258760419 2018-05-08 02:03:03 UTC https://padlet.com/gess/substancesgrade8/wish/258760419 Aditya_Dhingra https://padlet.com/gess/substancesgrade8/wish/258760478 sulfer acid and sugar reaction]]> 2018-05-08 02:03:23 UTC https://padlet.com/gess/substancesgrade8/wish/258760478 alexander_pennefather https://padlet.com/gess/substancesgrade8/wish/258760496 Acid and Sugar]]> 2018-05-08 02:03:27 UTC https://padlet.com/gess/substancesgrade8/wish/258760496 marlene_lobel1_1 https://padlet.com/gess/substancesgrade8/wish/258760693 Photosynthesis is the process by which plants convert energy from the sun into chemical energy in the result of sugar. ]]> 2018-05-08 02:04:27 UTC https://padlet.com/gess/substancesgrade8/wish/258760693 https://padlet.com/gess/substancesgrade8/wish/258760781 8 Al + 3 Fe3O4 –> 9 Fe + 4 Al2O3 + Heat

8 Aluminium + 3 Iron and 4 oxygen ---> 9 Iron + 4 * 2 Alumiium and 3 Oxygen

Thermite is a chemical reaction when Aluminium and copper sulphate react to create heat (3000 Degrees) and
The products are aluminium and iorn oxide in the reaction. 

]]> 2018-05-08 02:04:45 UTC https://padlet.com/gess/substancesgrade8/wish/258760781 https://padlet.com/gess/substancesgrade8/wish/258760925 2018-05-08 02:05:32 UTC https://padlet.com/gess/substancesgrade8/wish/258760925 amiyo_das1_1 https://padlet.com/gess/substancesgrade8/wish/258761198 2018-05-08 02:06:49 UTC https://padlet.com/gess/substancesgrade8/wish/258761198 https://padlet.com/gess/substancesgrade8/wish/258761365 Job
1. Also called the oscillating clock reaction, the Briggsrauscher reaction is all about the element iodine. 
2. The oscillation, from the two colorless solutions to yellow to blue to clear and back to yellow again, depends on the two forms of iodine.
3. The two forms of iodine are molecules with two atoms types of iodine bound together, and alone, negatively charged iodine atoms
4. Whilst the experiment is on-going multiple reactions take place; change in colour, ]]> 2018-05-08 02:07:38 UTC https://padlet.com/gess/substancesgrade8/wish/258761365 luke_skywalkerr596 https://padlet.com/gess/substancesgrade8/wish/258761425 1. A cyclic peroxide is produced by the reaction, which quickly decomposes ]]> 2018-05-08 02:07:57 UTC https://padlet.com/gess/substancesgrade8/wish/258761425 louie_kent https://padlet.com/gess/substancesgrade8/wish/258761574 2018-05-08 02:08:46 UTC https://padlet.com/gess/substancesgrade8/wish/258761574 sophia_haller1_1 https://padlet.com/gess/substancesgrade8/wish/258761758 1. white to pale yellow crystalline solid which is soluble in most popular organic solvents, but not in water, which is insoluble in it.

2. Usage of Luminol is in crime scenes to detect trace amounts of blood.]]> 2018-05-08 02:09:39 UTC https://padlet.com/gess/substancesgrade8/wish/258761758 elina_reilhac_laborde1_1 https://padlet.com/gess/substancesgrade8/wish/258761767 Golden rain is a mix of two colorless solutions: potassium iodide solution and lead nitrate solution at room temperature to form lead iodide and potassium nitrate]]> 2018-05-08 02:09:41 UTC https://padlet.com/gess/substancesgrade8/wish/258761767 arjanrijkens https://padlet.com/gess/substancesgrade8/wish/258761796 2018-05-08 02:09:50 UTC https://padlet.com/gess/substancesgrade8/wish/258761796 amiyo_das1_1 https://padlet.com/gess/substancesgrade8/wish/258761885 2018-05-08 02:10:17 UTC https://padlet.com/gess/substancesgrade8/wish/258761885 johann_greilinger1_1 https://padlet.com/gess/substancesgrade8/wish/258762104 2018-05-08 02:11:26 UTC https://padlet.com/gess/substancesgrade8/wish/258762104 arjanrijkens https://padlet.com/gess/substancesgrade8/wish/258762210 why is it a chemical reaction?
the


advantages:


disadvanages:]]> 2018-05-08 02:12:03 UTC https://padlet.com/gess/substancesgrade8/wish/258762210 kieran_ward https://padlet.com/gess/substancesgrade8/wish/258762238 The reactant is the aluminium and the iron oxide]]> 2018-05-08 02:12:09 UTC https://padlet.com/gess/substancesgrade8/wish/258762238 luke_skywalkerr596 https://padlet.com/gess/substancesgrade8/wish/258762248 luminol formula - C₈H₇N₃O₂]]> 2018-05-08 02:12:12 UTC https://padlet.com/gess/substancesgrade8/wish/258762248 elina_reilhac_laborde1_1 https://padlet.com/gess/substancesgrade8/wish/258762385 Potassium iodide is a compound that is made up of the elements potassium and ionic
Lead nitrate is a compound that is made up of the elements lead and a poly atomic ion called nitrate.]]> 2018-05-08 02:12:53 UTC https://padlet.com/gess/substancesgrade8/wish/258762385 louie_kent https://padlet.com/gess/substancesgrade8/wish/258762504 5.  hydrogen peroxide and  potassium iodide
6. 

 
7. advantages 
the reaction looks cool and its intresting 


8. disadvantages
waste of materials 



]]> 2018-05-08 02:13:30 UTC https://padlet.com/gess/substancesgrade8/wish/258762504 elina_reilhac_laborde1_1 https://padlet.com/gess/substancesgrade8/wish/258762574 The solution changes from a clear solution to a yellow precipitate of lead (II) iodide
The solution heats up and precipitates in the form of lead iodide crystals

]]> 2018-05-08 02:13:50 UTC https://padlet.com/gess/substancesgrade8/wish/258762574 aadya_tiwari1_1 https://padlet.com/gess/substancesgrade8/wish/258762685 Potassium Iodide + Lead Nitrate ---> Potassium Nitrate +  Lead Iodide
Chemical Equation:
2KI + Pb(NO₃)₂ → 2KNO₃ + PbI₂

]]> 2018-05-08 02:14:23 UTC https://padlet.com/gess/substancesgrade8/wish/258762685 https://padlet.com/gess/substancesgrade8/wish/258762834 The advantages of Thermite is that it is used in welding and can seep into cracks of metal. It is highly reliable as it heats up to 3000 degrees celcius.
The disadvantages are ------]]> 2018-05-08 02:15:05 UTC https://padlet.com/gess/substancesgrade8/wish/258762834 etienne_middleton1_1 https://padlet.com/gess/substancesgrade8/wish/258762895 1. Also know as Mercury(II) thiocyanate. It is a white powder and produces a large winding "snake" when ignited.

2. The chemicals used in this experiment is done by just igniting mercury(II) thiocyanate. Formula: 2Hg(SCN)₂ → 2HgS + CS₂ + C₃N_4.]]> 2018-05-08 02:15:25 UTC https://padlet.com/gess/substancesgrade8/wish/258762895 https://padlet.com/gess/substancesgrade8/wish/258762988 - Blood is not the only substance that is triggered by Luminol. 
-> copper, bleach, urine & animal blood
- prevents other tests from being preformed on the item it has been sprayed on, but DNA can still be extracted.
-  Fluorecent must be observed in a dark room, and observation window is really short.
- it has been identified as a possible carcinogen. (a substance capable of causing cancer.)]]> 2018-05-08 02:15:48 UTC https://padlet.com/gess/substancesgrade8/wish/258762988 amiyo_das1_1 https://padlet.com/gess/substancesgrade8/wish/258762990 Rectants:
1. potassium iodide 
2. sulphuric acid 
3. Malonic acid
4. manganese sulfate monohydrate
5. Vitex starch
5. Hydrogen peroxide

Products
1. Water
2. oxygen
3.

]]> 2018-05-08 02:15:48 UTC https://padlet.com/gess/substancesgrade8/wish/258762990 aadya_tiwari1_1 https://padlet.com/gess/substancesgrade8/wish/258763168 2018-05-08 02:16:42 UTC https://padlet.com/gess/substancesgrade8/wish/258763168 aadya_tiwari1_1 https://padlet.com/gess/substancesgrade8/wish/258763291 2018-05-08 02:17:13 UTC https://padlet.com/gess/substancesgrade8/wish/258763291 aadya_tiwari1_1 https://padlet.com/gess/substancesgrade8/wish/258763419 2018-05-08 02:17:39 UTC https://padlet.com/gess/substancesgrade8/wish/258763419 johann_greilinger1_1 https://padlet.com/gess/substancesgrade8/wish/258763543 3.you can see that its a physical change because its changing in size

]]> 2018-05-08 02:18:18 UTC https://padlet.com/gess/substancesgrade8/wish/258763543 Aditya_Dhingra https://padlet.com/gess/substancesgrade8/wish/258763553 It's the dehydration of sugar and sufuric acid. The sulfuric acid removes water from the sugar in a highly exothermic reaction, releasing heat, steam, and sulfur oxide fumes. Chemical Equation: C₁₂H₂₂O₁₁ (sugar) + H₂SO₄ (sulfuric acid) → 12 C (carbon) + 11 H₂O (water) + mixture water and acid]]> 2018-05-08 02:18:21 UTC https://padlet.com/gess/substancesgrade8/wish/258763553 meerakapoor1 https://padlet.com/gess/substancesgrade8/wish/258764422 The plants use energy from the light they get from the sun to react with carbon dioxide and water to make glucose and oxygen.

Reactants: Light energy, carbon dioxide and water.

Products: Glucose and Oxygen 

]]> 2018-05-08 02:22:36 UTC https://padlet.com/gess/substancesgrade8/wish/258764422 johann_greilinger1_1 https://padlet.com/gess/substancesgrade8/wish/258764734 HgO + 2 HSCN → Hg(SCN)₂ + H₂O
or
Hg(NO₃)₂ + 2 KSCN → Hg(SCN)₂ + 2KNO₃]]> 2018-05-08 02:24:10 UTC https://padlet.com/gess/substancesgrade8/wish/258764734 https://padlet.com/gess/substancesgrade8/wish/258764770 2018-05-08 02:24:21 UTC https://padlet.com/gess/substancesgrade8/wish/258764770 luke_skywalkerr596 https://padlet.com/gess/substancesgrade8/wish/258764786 It is made from hydrazine and hydrogen peroxide and exhibits chemiluminescence]]> 2018-05-08 02:24:28 UTC https://padlet.com/gess/substancesgrade8/wish/258764786 luke_skywalkerr596 https://padlet.com/gess/substancesgrade8/wish/258765457 - It reacts with blood without being mixed with any other oxidizing agent. Luminol wears off in 30 seconds, preventing tested substances from glowing for long periods of time.
- Luminol can be photographed to provide permanent evidence of a crime.
- It detects trace amounts of blood that are many years old, even if the bloody surface/item was cleaned]]> 2018-05-08 02:28:02 UTC https://padlet.com/gess/substancesgrade8/wish/258765457 sophia_haller1_1 https://padlet.com/gess/substancesgrade8/wish/258765688 Carbon + Hydrogen + Nitrogen + Oxygen]]> 2018-05-08 02:29:17 UTC https://padlet.com/gess/substancesgrade8/wish/258765688 meerakapoor1 https://padlet.com/gess/substancesgrade8/wish/258766158 Reactants: 
Carbon dioxide = compound
water= compound 
Products:
Oxygen=element 
glucose=compound

]]> 2018-05-08 02:31:47 UTC https://padlet.com/gess/substancesgrade8/wish/258766158 johann_greilinger1_1 https://padlet.com/gess/substancesgrade8/wish/258766194 the disadvantages are that mercury thiocyanate ]]> 2018-05-08 02:31:58 UTC https://padlet.com/gess/substancesgrade8/wish/258766194 meerakapoor1 https://padlet.com/gess/substancesgrade8/wish/258766281 Water and carbon dioxide combine and we get glucose and oxygen. This is a chemical reaction because new chemical species are formed.]]> 2018-05-08 02:32:25 UTC https://padlet.com/gess/substancesgrade8/wish/258766281 https://padlet.com/gess/substancesgrade8/wish/258766289
Luminol --> Carbon + Hydrogen + Nitrogen + Oxygen
Chemical equation
C₈H₇N₃O₂ --> ]]> 2018-05-08 02:32:29 UTC https://padlet.com/gess/substancesgrade8/wish/258766289 marlene_lobel1_1 https://padlet.com/gess/substancesgrade8/wish/258766369 2018-05-08 02:32:52 UTC https://padlet.com/gess/substancesgrade8/wish/258766369 alexander_pennefather https://padlet.com/gess/substancesgrade8/wish/258766411 When doing this experiment, use proper safety precautions. Always remember to wear with concentrated sulfuric acid, you should wear gloves, eye protection, and a lab coat at all times, to prevent any injuries.]]> 2018-05-08 02:32:59 UTC https://padlet.com/gess/substancesgrade8/wish/258766411 meerakapoor1 https://padlet.com/gess/substancesgrade8/wish/258766491 Chemical word equation:
light energy + carbon dioxide + water = sugar + oxygen

Chemical equation: light energy + CO₂ + H₂O = CH₂O + O₂ ]]> 2018-05-08 02:33:19 UTC https://padlet.com/gess/substancesgrade8/wish/258766491 marlene_lobel1_1 https://padlet.com/gess/substancesgrade8/wish/258766568 2018-05-08 02:33:44 UTC https://padlet.com/gess/substancesgrade8/wish/258766568 marlene_lobel1_1 https://padlet.com/gess/substancesgrade8/wish/258766601 The disadvantages of photosynthesis are that if the amount of carbon dioxide and water is limited the making of sugar and oxygen will slow down. ]]> 2018-05-08 02:33:51 UTC https://padlet.com/gess/substancesgrade8/wish/258766601 arjanrijkens https://padlet.com/gess/substancesgrade8/wish/258767175 the Briggsrauscher is being applied for measurement of antioxidant activity of water-soluble substances.]]> 2018-05-08 02:36:39 UTC https://padlet.com/gess/substancesgrade8/wish/258767175 kieran_ward https://padlet.com/gess/substancesgrade8/wish/258767381 The sparks and the steam are the products also the molten metal]]> 2018-05-08 02:37:58 UTC https://padlet.com/gess/substancesgrade8/wish/258767381