29 Jan 2019 Lab Introductory (CHE 11) by Albert Y. A. Lim https://padlet.com/albertlimyeeann/CHE11LAB1 Lab Basic Skills & Safety Precautions en-us 2019-01-29 00:30:45 UTC 2025-11-20 21:06:16 UTC hello@padlet.com STATION 1 albertlimyeeann https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325200487 Memory Game
https://matchthememory.com/laboratoryequipment

]]> 2019-01-29 00:30:45 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325200487 STATION 2 albertlimyeeann https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325200488 Using the Weighing Balance
http://www.videosmaller.com/]]> 2019-01-29 00:30:45 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325200488 STATION 3 albertlimyeeann https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325200489 (Type your answer)
1. ..........
2. ..........
3. ..........
4. ..........
5. ..........
6. ..........]]> 2019-01-29 00:30:45 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325200489 Pei Yee , Jing Yu, Su Wen, Yu Xuan https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325257551 2019-01-29 07:01:11 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325257551 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325257697

]]> 2019-01-29 07:02:12 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325257697 Crystal, Kayla, Hanis, Alyssa, Amir https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325257732 2019-01-29 07:02:26 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325257732 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325257938 Tang,Shian Yin,Ying Xuan,Ern Yi]]> 2019-01-29 07:03:48 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325257938 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325258125 Farhana]]> 2019-01-29 07:05:14 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325258125 Yong Ling https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325258148 2019-01-29 07:05:24 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325258148 Daham, Jonathan, Joshua, WeeKee https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325258173 2019-01-29 07:05:35 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325258173 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325258393 Nikhil]]> 2019-01-29 07:07:06 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325258393 WORKSHEET albertlimyeeann https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325259449 2019-01-29 07:13:35 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325259449 HOW TO USE A WEIGHING BALANCE albertlimyeeann https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325259477 2019-01-29 07:13:47 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325259477 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325259645 2019-01-29 07:14:49 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325259645 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325259827 2019-01-29 07:15:44 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325259827 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325259843 2019-01-29 07:15:49 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325259843 joshths https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325260028 2019-01-29 07:16:46 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325260028 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325260055 2019-01-29 07:16:56 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325260055 STATION 3 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325260671 (Type your answer)
1. -heat it using a test tube holder.-make sure to face the mouth of test tube away from ourselves and also away from our friends.
2. Neutralise acid with sodium bicarbonate (powder) and absorb it with a paper towel. 
3. A more preferable and safer method is adding water to acid, as adding acid to water holds a higher risk of acid spill as opposed to holding a beaker of water and pouring it into a beaker of acid.
4. B, 25.6
5. Grams
6. ..........]]> 2019-01-29 07:20:18 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325260671 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325260918 2019-01-29 07:21:37 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325260918 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325261362 2019-01-29 07:23:53 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325261362 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325261713 2019-01-29 07:25:42 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325261713 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325261804 2019-01-29 07:26:13 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325261804 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325262206 2019-01-29 07:27:47 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325262206 joshths https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325263151 2019-01-29 07:32:11 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325263151 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325263309 2019-01-29 07:32:55 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325263309 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325263625 2019-01-29 07:34:37 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325263625 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325263700 2019-01-29 07:34:53 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325263700 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325263733 Q1
Use a test tube holder when you heating test tube. Place the mouth of test tube away from people. 

Q2
Sulphuric avid should be neutralised with sodium bicarbonate (powder or liquid?) then wipe off with a paper towel. 

Q3
Add acid to water. Because can cause vigorous exothermic reaction. 

Q4
Figure C
25.6

Q5
gram

]]> 2019-01-29 07:35:00 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325263733 Station 3 joshths https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325264268 Q1 Don't face the solution towards the face, do not hold the thermometer bare hand, wear lab coat and goggles at all times

Q2 Shut off all ignition sources, wear eye and skin protection, use gloves compatible with acid such as thick nitrile or neoprene. If acid is neutraliseble, use weak acid base. If not use an absorbent such as cloth or pillow

Q3 No, I would add acid to water. This is because acid and water react in a vigorous exothermic reaction, releasing heat, sometimes boiling the liquid. If you add acid to water, the water is unlikely to splash up, but even if it did, it's less likely to hurt you than if you add water to acid. When water is added to acid, the water boils and the acid may splatter and splash.

Q4 Figure B 25.7ml
Q5 grams]]> 2019-01-29 07:37:18 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325264268 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325264691 2019-01-29 07:39:16 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325264691 Worksheet https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325265042 Question 1
Make sure there are no flammable items near the Bunsen burner.

Question 2
Wear gloves and use an alkali solution to neutralise the sulfuric acid.

Question 3
Water should be added to acid. It is safer as acid will not splash.

Question 4
Figure B
25.6 ml

Question 5
Gram]]> 2019-01-29 07:40:54 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325265042 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325265123 2019-01-29 07:41:14 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325265123 18115063 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325265304 2019-01-29 07:41:55 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325265304 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325265310 Q1
Use a test tube holder when you heating test tube. Place the mouth of test tube away from people. 

Q2
Sulphuric acid should be neutralised with sodium bicarbonate powder then wipe off with a paper towel. 

Q3
Add acid to water. Because can cause vigorous exothermic reaction. 

Q4
Figure C
25.6

Q5
gram

]]> 2019-01-29 07:41:57 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325265310 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325265596 2019-01-29 07:43:10 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325265596 1. By using the test tube holder.2.1. Neutralize spill with sodium bicarbonate/baking soda2. Wait until bubbling/fizzing has stopped3. When using a neutralizing spill kit, the kits are buffered and will not have a bubbling action. Be careful not to over-neutralize4. Test pH of the spill after the neutralization reaction has stopped with pH paper5. Once pH is between 6 and 9, the material can be transferred into an appropriate secondary container for disposal6. Wipe all surfaces with a sponge and wash all of the material down the sink.3. Add acid to water.When acid is poured into water, it flows down the flask and mixes much better, so no boiling occurs.4. 25.7ml5. Gram 18115063 https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325266464 2019-01-29 07:47:24 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325266464 WATCH THIS! https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325268807 2019-01-29 07:57:23 UTC https://padlet.com/albertlimyeeann/CHE11LAB1/wish/325268807