National 5 Chemistry

Set up 2 apparatus and for each experiment use one brand and another bran for the other experiment. Then heat it and the carbon dioxide will pass through the delivery tube into the test tube with lime water in it. Check what test tube is cloudier and the cloudier one will hav more carbon dioxide since lime water turns carbon dioxide cloudy.

I talked about that limewater thing as well, But never gave a description of the experiment.
I said something about density as well.

Reply 501

Lewis H01

7

For the Strontium one I wrote about it as a radioisotope

Reply 502

Jay431

2

Original post by Lewis H01

What did everyone get for the what type of reaction is it at beaker B and the other reaction one?

Oxidation for beaker B wasn't it?

Reply 503

eve_4342

12

Original post by Frank$

I'm pretty sure that 0.36 litres is right as the balanced equation above the question showed 2Al to 3H2

Sure ? Don't lull me into a false sense of security

Reply 504

Lewis H01

7

Original post by Jay431

Oxidation for beaker B wasn't it?

I think it was but I wrote reduction, I had oxidation then changed it to reduction :/
What about the other chemical reaction I got addition

Reply 505

Aaaaa01

2

Original post by studyranger

For the last using your knowledge q what did everyone put down?

Set up 2 apparatus and for each experiment use one brand and another bran for the other experiment. Then heat it and the carbon dioxide will pass through the delivery tube into the test tube with lime water in it. Check what test tube is cloudier and the cloudier one will hav more carbon dioxide since lime water turns carbon dioxide cloudy.

Reply 506

Jay431

2

Original post by Lewis H01

I think it was but I wrote reduction, I had oxidation then changed it to reduction :/
What about the other chemical reaction I got addition

For polymerisation yeah it was addition

Reply 507

Jay431

2

What did people put down for strontium?

Reply 508

Frank$

5

Original post by eve_4342

Sure ? Don't lull me into a false sense of security

I'm sure as it was what I got and was one of the questions that stumped me for a moment before I got it.

My workings were something similar to:
1 mole H2 = 24 L
Al = 0.01 moles
Al : H2
2 : 3
5 parts so 1 part = 0.01/2 = 0.005
3 x 0.005 = 0.015
Final answer = 24 x 0.015 = 0.36 L

Reply 509

Ethan100

15

Original post by Frank$

I'm sure as it was what I got and was one of the questions that stumped me for a moment before I got it.

My workings were something similar to:
1 mole H2 = 24 L
Al = 0.01 moles
Al : H2
2 : 3
5 parts so 1 part = 0.01/2 = 0.005
3 x 0.005 = 0.015
Final answer = 24 x 0.015 = 0.36 L

I got the same exact working and final answer as you Frank

Reply 510

Aaaaa01

2

Original post by Jay431

What did people put down for strontium?

Its a metal. It loses to electrons to become positive. To test for strontium heat it and see if the flame colour turns watever colour it said in the data booklet. Density, and cant rmbr

Reply 511

Frank$

5

Original post by Ethan100

I got the same exact working and final answer as you Frank

That's comforting! It was definitely one of the more harder questions in the paper for me

Reply 512

Jay431

2

Original post by Aaaaa01

Its a metal. It loses to electrons to become positive. To test for strontium heat it and see if the flame colour turns watever colour it said in the data booklet. Density, and cant rmbr

Yeah I done mostly the same as you, But forgot about the flame test lol

Reply 513

Marina1264

2

What did people say for the question about what the sodium ion solution thing acted as? I put conductor but I know it's wrong now, was it electrolyte?

Reply 514

Chemman1

Original post by Jay431

What did people put down for strontium?

Since it's a metal it's shiny, it has high melting and boiling points, it conducts electricity because of free moving ions and it has a red flame colour

Reply 515

Jay431

2

Original post by Marina1264

What did people say for the question about what the sodium ion solution thing acted as? I put conductor but I know it's wrong now, was it electrolyte?

I wrote electrolyte, I think

Original post by Chemman1

Since it's a metal it's shiny, it has high melting and boiling points, it conducts electricity because of free moving ions and it has a red flame colour