Homework 28th Feb

 

1. Complete risk assessment, method and equipment list for titration (check blog and shared area for COSHH and CLEAPPS information.

2. Research alternative methods and/ or equipment for titration

•Make sure you write/ stick these in you lab notebooks and include a reference.

•Make your own notes about how the methods/ equipment you find are different or an improvement on the method/ equipment you are using.

Record all research and notes in your lab notebook

Put all references used next to your research AND in the bibliography pages at the back of your lab notebook.

Deadline for assignments

Unit 4- P1, M1 & D1 task

Due 1st week after Easter holidays

Unit 5- pressure groups

1st deadline Thursday 14th March

Final deadline Thursday 28th March

Unit 5- ethics

1st deadline Thursday 14th March

Final deadline Thursday 28th March

Unit 4 assignment 1- quantitative & qualitative analysis

 Pass

Task 1: titration

Task 2: flame tests

(hand in lab notebooks, calculations and photographs)

Merit

Task 3: Report explaining how you ensured accuracy in task 1 & 2.

Distinction

Task 4: Report evaluating techniques used in task 1 & 2 (compare to other methods you could have used, alternative equipment, references, improvements to future investigations).

ethics research sheets

Ethics

 

P4	report on the ethical and moral issues related to scientific developments
M3	discuss how the ethical and moral issues related to scientific developments will affect society
D3	evaluate whether the ethical and moral issues are important enough to stop scientific developments

1st deadline Thursday 14th March

Final deadline Thursday 28th March

Hand in the A3 sheets for task 1 & 2 and the report for task 3

Make a list of at least 5 areas of scientific advancement and describe briefly the ethical and moral issues associated with each

When you have completed this you will have achieved P4

Choose 1 prominent area of scientific advancement and list the negative and positive attitudes that where shown.

Summarise how either point made may have an effect on society

When you have completed this you will have achieved M3

Choose 1 prominent area of scientific advancement, research from a wide variety of sources and present a report looking at the issues surrounding this subject.

Decide if the issues are important enough to stop the research in that area of advancement.

When you have completed this you will have achieved D3

Unit 4 assignment 1- quantitative and qualitative

Pass

Task 1: titration

Task 2: flame tests

(hand in lab notebooks, calculations and photographs)

Merit

Task 3: Report explaining how you ensured accuracy in task 1 & 2.

Distinction

Task 4: Report evaluating techniques used in task 1 & 2 (compare to other methods you could have used, alternative equipment, references, improvements to future investigations).

Trip details

I am writing to tell you about the exciting opportunity we have been given to take a group of students to the London Natural History Museum. This event takes place on Tuesday 26^th February 2013, 8.30-6.00 pm.  We will travel by coach to and from the museum.

Students will visit the ‘Cocoon’ exhibition at the museum, which is a self-guided tour and witness real biological specimens, incredible displays and animated interactive activities. Students will get the opportunity to view some of the museums most historic specimens and books for the first time in the historical display area at the start of the tour. Learn about great collectors and naturalists

We will meet outside at the Gipsy Lane Entrance of Cheney School at 8.15am on the 26^th February. Students will need to bring a packed lunch and a drink as there are no lunch facilities at the museum. Food will be available from the school canteen before 8.15am for students to collect if they wish to do so.

We are requesting a voluntary contribution of £14 which includes transport (coach travel), staff cover, and insurance. The trip is subject to there being sufficient funds available to cover the costs and if the amount of voluntary contribution does not cover the cost of the trip, it may not be able to go ahead.  This amount is non-refundable unless the trip is cancelled by the school.  Free School Meal students have already been identified but please ensure you have completed the application paperwork and complete the slip below. If making this contribution will cause you financial hardship, please contact your college.

If you would like your child to attend and you give them parental permission to do so, please fill out the slip below and bring it with your money to the School Shop by Friday 8^th February. Cheques can be made payable to Cheney School.

If by Friday 8^th February we are over-subscribed, to ensure places are allocated fairly, we will draw lots. No cheques will be cashed before this date.

titration results table

titration stuff you need

1. Write a method & equipment list for an acid-base titration using sodium hydroxide & hydrochloric acid with phenolphthalein indicator.

(draw the equipment/method)

2. Write a risk assessment for this titration

-refer to COSHH, CLEAPPS, hazard symbols and waste disposal information in your risk assessment.

3. Draw yourself results table to record results

making standard solution 2

 

Preparing a standard solution of 100cm3 of 1.0 mol dm-3 HCl from 2.0 mol dm-3 HCl stock.

Step 1: use the formula

Vs = Vf x CF/ CI

Step 2: definitions

Vs  volume of solution needed to be diluted to give the required concentration

Vf  the final volume required (100cm3)

CF   final concentration required (1.0mol dm-3)

CI   initial concentration (2.0 mol dm-3)

Step 3: calculate the volume of solution needed to be diluted

Vs = 100 x 1.0/2.0

=cm3

So, to prepare a standard solution of 100cm3 of 1.0mol dm-3 HCl from 2.0 mol dm-3 HCl, you would measure out BBcm3 of 2.0 mol dm-3 HCl stock in a volumetric flask and make up the volume to 100cm3.

making standard solution 1

Preparing a standard solution of 100cm3 of 0.5 mol dm-3 HCl from 2.0 mol dm-3 HCl stock.

Step 1: use the formula

Vs = Vf x CF/ CI

Step 2: definitions

Vs  volume of solution needed to be diluted to give the required concentration

Vf  the final volume required (100cm3)

CF   final concentration required (0.5 mol dm-3)

CI   initial concentration (2.0 mol dm-3)

Step 3: calculate the volume of solution needed to be diluted

Vs = 100 x 0.5/2.0

=cm3

So, to prepare a standard solution of 100cm3 of 0.4mol dm-3 HCl from 2.0 mol dm-3 HCl, you would measure out BBcm3 of 2.0 mol dm-3 HCl stock in a volumetric flask and make up the volume to 100cm3.