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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

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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

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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

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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

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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

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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

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(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. ..........

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General Lab Safety and Lab Techniques- lab blended - Answers

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Nikhil

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Farhana

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Tang,Shian Yin,Ying Xuan,Ern Yi

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(Type your answer)
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2. ..........
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Using the Weighing Balance
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Memory Game
https://matchthememory.com/laboratoryequipment