Noadswood Revision Hangout Triple Science – Chemistry (C3) This revision session will start shortly… Turn your volume up on your device You will need some.

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Presentation transcript:

Noadswood Revision Hangout Triple Science – Chemistry (C3) This revision session will start shortly… Turn your volume up on your device You will need some paper, a pen and a calculator When the session begins you can post comments using the wall to the right hand side of the video Please write your name on the wall so we know who has joined us… Comments will not auto-update so please press the refresh button on a regular basis (we recommend every 5 minutes) We hope you enjoy the session and find it

Triple Chemistry (C3) Early Periodic Table Modern Periodic Table Alkali Metals and Halogens Water and Water Softening Haber Process Energy in Fuels Bond Energies Titration Calculations If we have time… Testing for metal ions Testing for non-metal ions Hydrogen Fuel Alcohols, Carboxylic Acids and Esters

1 – Early Periodic Table MendeleevNewlands

2 – Modern Periodic Table

Here’s a question for you to do…

3 – Reactivity

Here’s a question for you to do…

4 – Hardness of Water

5 – Softening Water

AdvantagesDisadvantages Ion exchange Sodium Carbonate

6 – Purifying Water

Here’s a question for you to do…

7 – Haber Process

Here’s a question for you to do…

8 – Energy and Fuels

Here’s a question for you to do…

9 – Energy Diagrams

Here’s a question for you to do…

10 – Bond Energies Energy is released when bonds are made Energy is taken in when bonds are broken Remember to balance the equation first N 2 + H 2  NH 3 N ≡ N H – H → BondAverage bond energy (kJ/mol) H - H436 N - H 386 N ≡ N944 Is this reaction exothermic or endothermic?

Here’s a question for you to do…

11 - Titration calculations

Here’s a question for you to do…

12 - Identifying Substances

13 - Testing for positive ions

Add sodium hydroxide to the solution Dirty Green Precipitate = Iron II Brown / Orange Precipitate = Iron III Light Blue Precipitate = Copper II White precipitate = Could be Calcium, Magnesium, Aluminium

13 - Testing for positive ions Add sodium hydroxide to the solution Dirty Green Precipitate = Iron II Brown / Orange Precipitate = Iron III Light Blue Precipitate = Copper II White precipitate = Could be Calcium, Magnesium, Aluminium Add Excess Sodium Hydroxide White precipitate Disappears White precipitate doesn’t Disappear Aluminium Calcium or Magnesium

14 - Testing for negative ions HALIDES Add Dilute Nitric Acid + Silver Nitrate White precipitate = Chloride (silver chloride) Cream Precipitate = Bromides (silver bromide) Yellow Precipitate = Iodides (silver iodide) White precipitate = Sulfates SULFATES Add Dilute HCl + Barium Chloride Ag + (aq) + X - (aq)  AgX (s) Ba 2+ (aq) + SO 4 2- (aq)  BaSO 4 (s) CARBONATES Add dilute acid CO 2 produced, limewater goes cloudy.

Here’s a question for you to do…

Noadswood Revision Hangout Triple Science – Chemistry (C3) Don’t forget these revision hangouts form a small piece of your overall revision plan… Revision cards Revision videos (such as revision monkey) Brainscape CGP or equivalent revision guide Past papers Speaking with friends and testing one another... All resources are on > revisionwww.noadswoodscience.com

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