A Level Bridging Work 2020-2021 BTEC Level Applied Science

The tasks below are designed to support you as you prepare to start BTEC Level 3 Applied Science.

These tasks have been developed to build on your GCSE knowledge and help with the transition into sixth form, using your time wisely over the coming months to

ensure you maintain a level of education that will be needed to be successful in your subject when you enroll into the sixth form in August/September.

BTEC Level 3 Extended Certificate in Applied Science

Qualification Unit number and title

Pearson BTEC Level 3 National Extended Certificate in Applied Science Pearson

Unit A: Preparing for the Applied Science Course

Learner name Assessor name

Rachel Hudson

Date issued Hand in deadline Submitted on

01/05/2020 31/05/2020

Assignment title Investigate the effect of activity on respiration in humans.

Criteria reference

To achieve the criteria the evidence must show that the learner is able to:

Task no.

Page numbers/evidenc

e

Achieved?

B.P2

Explain where respiration takes place in the cell

1

B.P3

Carry out an investigation involving the effect of exercise on breathing rate and pulse rate in humans.

1

B.P4

Draw simple conclusions from your investigation.

1

B.M2

Explain how respiration takes place in cells, including how the reactants reach the cell and how useful and waste products are removed from the cell

1

B.M3

Identify and explain anomalies in your data and draw detailed conclusions which relate the results of your experiment to cellular respiration during exercise.

1

B.D2

Explain in detail the differences between aerobic and anaerobic respiration.

1

Learner declaration

I certify that the work submitted for this assignment is my own. I have clearly referenced any sources used in the work. I understand that false declaration is a form of malpractice.

Learner signature: Date:

Assignment Brief

Vocational Scenario or context: You are working as a research assistant in the School of Sport, Exercise

and Health Sciences at the local university. Your supervisor has asked you to investigate the effect of exercise on the rate of respiration. In order to do this you will need to investigate the effect of exercise on pulse rate and breathing rate. You will then need to relate the results of your investigation to the rate of respiration in humans.

Your Task : Produce a report describing, analysing and explaining the effect of exercise on respiration. In your report you need to use correct and accurate scientific terminology, and you need to include:

An introduction describing: o what respiration is o where it takes place within the cell o how the reactants needed for respiration reach the cell o how the products are used in or excreted from the body.

Competently and safely carry out an investigation into the effects of activity on breathing rate and/or pulse rate. You need to think about:

o How are you going to take measurements o How many measurements are you going to take? (range of readings and number of

repeats) o What is your results table going to look like? o What will you do with any anomalous results?

You need to provide outline details of your method, including any equipment used, a results table with anomalies identified and if possible explained, a graph to show the results you have obtained and a conclusion linking your results to respiration. HINT: You may want to take readings after you have stopped doing exercise to see how long it takes for your pulse and breathing rate to return to normal.

Additional research into the differences between anaerobic and aerobic respiration.

Where does anaerobic respiration take place in the cell? What does it produce and

how does our body metabolise this waste product. If you can, try to find out about

respiration in more detail than you learnt at GCSE. It is this additional research that

will get you a Distinction

Sources of information to support you with this assignment

GCSE Revision Guide https://www.youtube.com/watch?v=Xp0o19gWX7E https://www.bbc.co.uk/bitesize/guides/zcjy97h/revision/1 https://www.youtube.com/watch?v=GVU_zANtroE The information below is more complicated but will help you to reach the distinction level: https://alevelbiology.co.uk/notes/respiration/

BTEC Level 3 Extended Certificate in Applied Science

Qualification Unit number and title

Pearson BTEC Level 3 National Extended Certificate in Applied Science Pearson

Unit A: Preparing for the Applied Science Course

Learner name Assessor name

Rachel Hudson

Date issued Hand in deadline Submitted on

01/05/2020 31/05/2020

Assignment title To Research The Uses of Electromagnetic Waves in Communication

Criteria reference

To achieve the criteria the evidence must show that the learner is able to:

Task no.

Page numbers/evidenc

e

Achieved?

B.P2

List the waves of the electromagnetic spectrum in order with their frequencies

1

B.P3

State the speed of electromagnetic waves in a vacuum 1

B.P4

List the type of wave involved in: satellite communication, mobile phones, Bluetooth®, infrared and Wi-Fi.

1

B.M2

Relate the applications of EM waves above to their frequency

1

B.M3

Write the equation for the inverse square law describing the intensity of the wave.

1

B.D2

Explain in detail how the applications of waves in P4 work and show the calculations of their wave intensity.

1

Learner declaration

I certify that the work submitted for this assignment is my own. I have clearly referenced any sources used in the work. I understand that false declaration is a form of malpractice.

Learner signature: Date:

Assignment Brief

Vocational Scenario or context: You are working for a communications company and have been asked to

write an educational leaflet about magnetic waves and their uses. Your leaflet needs to include some general information on the electromagnetic spectrum as well as some specific information about the way in which Bluetooth, satellite communication, mobile phones, infrared and Wifi work.

Your Task : Produce a leaflet describing how waves are used in communication. In your report you need to use correct and accurate scientific terminology, and you need to include:

An introduction describing: o What is an EM wave. o The names of the EM waves in order. o The speed of EM waves in a vacuum.

An description of how the following applications work:

o Satellite communication

o Mobile phones

o Bluetooth

o Infrared

o Wi-Fi

You need to explain these in as much detail as possible with diagrams where necessary.

Some calculations to show that you understand how the inverse square law can

describe the wave intensity and how this can be related to their uses.

Sources of information to support you with this assignment

GCSE Revision Guide https://study.com/academy/lesson/technological-applications-of-electromagnetic-waves.html https://www.bbc.co.uk/bitesize/guides/zgf97p3/revision/1 https://www.bbc.co.uk/bitesize/guides/z9rqsrd/revision/2

Q1. This question is about metals and metal compounds.

(a) Iron pyrites is an ionic compound.

The diagram below shows a structure for iron pyrites.

Determine the formula of iron pyrites.

Use the diagram above.

___________________________________________________________________

(1)

(b) An atom of iron is represented as

Give the number of protons, neutrons and electrons in this atom of iron.

Number of protons _______________________

Number of neutrons _______________________

Number of electrons _______________________

(3)

(c) Iron is a transition metal.

Sodium is a Group 1 metal.

Give two differences between the properties of iron and sodium.

1. _________________________________________________________________

___________________________________________________________________

2. _________________________________________________________________

___________________________________________________________________

(2)

(Total 6 marks)

Q2. This question is about metals and alloys.

(a) Explain how electricity is conducted in a metal.

To gain full marks you must include a description of the structure and bonding of a metal.

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

(4)

(b) Describe how the structure of an alloy is different from the structure of a pure metal.

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

(2)

(Total 6 marks)

Q3. This question is about atoms, molecules and nanoparticles.

(a) Different atoms have different numbers of sub-atomic particles.

(i) An oxygen atom can be represented as O

Explain why the mass number of this atom is 16.

You should refer to the numbers of sub-atomic particles in the nucleus of the atom.

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

(2)

(ii) Explain why C and C are isotopes of carbon.

You should refer to the numbers of sub-atomic particles in the nucleus of each isotope.

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

(3)

(b) Hydrogen atoms and oxygen atoms chemically combine to produce water molecules.

(i) Complete the figure below to show the arrangement of the outer shell electrons of the hydrogen and oxygen atoms in a molecule of water.

Use dots (•) or crosses (×) to represent the electrons.

(2)

(ii) Name the type of bonding in a molecule of water.

_____________________________________

(1)

(iii) Why does pure water not conduct electricity?

______________________________________________________________

______________________________________________________________

(1)

(Total 9 marks)

Q4. This question is about fluorine.

(a) Figure 1 shows the arrangement of electrons in a fluorine atom.

(i) In which group of the periodic table is fluorine?

Group _______________________________

(1)

(ii) Complete the table below to show the particles in an atom and their relative masses.

Name of particle Relative mass

Proton

Neutron 1

Very small

(2)

(b) Sodium reacts with fluorine to produce sodium fluoride.

(i) Complete the word equation for this reaction.

sodium + ___________________ → ____________________

(1)

(ii) Complete the sentence.

Substances in which atoms of two or more different elements are chemically

combined are called _____________________ .

(1)

(iii) Figure 2 shows what happens to the electrons in the outer shells when a sodium atom reacts with a fluorine atom.

The dots (•) and crosses (×) represent electrons.

Use Figure 2 to help you answer this question.

Describe, as fully as you can, what happens when sodium reacts with fluorine to produce sodium fluoride.

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

(4)

(iv) Sodium fluoride is an ionic substance.

What are two properties of ionic substances?

Tick (✔) two boxes.

Dissolve in water

Gas at room temperature

High melting point

Low boiling point

(2)

(Total 11 marks)

Q5. Sodium hydroxide reacts with hydrochloric acid.

The diagram shows apparatus that can be used to find the volume of sodium hydroxide reacting with 25.0 cm 3 hydrochloric acid.

(a) Describe a method to find the exact volume of sodium hydroxide that reacts with 25.0 cm 3 of hydrochloric acid.

(6)

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

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______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

(Total 6 marks)

Mark schemes

Q1. (a) FeS2

do not accept equations 1

(b) 26 1

30 1

26 1

must be this order

(c) any two from: • iron has a high(er) melting / boiling point • iron is dense(r) • iron is hard(er)

allow iron is less malleable / ductile

• iron is strong(er) • iron is less reactive

allow specific reactions showing difference in reactivity

• iron has ions with different charges • iron forms coloured compounds • iron can be a catalyst

allow iron is magnetic

allow the converse statements for sodium allow transition metal for iron allow Group 1 metal for sodium

ignore references to atomic structure

ignore iron rusts 2

[6]

Q2. (a) giant structure / lattice / layers / close packed

first 3 marks can be obtained from a suitably labelled diagram

incorrect structure or bonding or particle = max 3 1

made up of atoms / positive ions 1

with delocalized / free electrons 1

so electrons can move / flow through the metal

accept so electrons can carry charge through the metal

accept so electrons can form a current

1

(b) an alloy (is a metal which) has different types / sizes of atoms

accept converse for pure metal throughout

both marks can be obtained from suitable diagrams

allow made of different metals

allow mixture of metals / atoms / elements

ignore particles

ignore properties

do not accept compound 1

alloy has distorted layers

allow layers are unable to slide 1

[6]

Q3. (a) (i) (mass number = 16) because there are 8 protons and 8 neutrons (in the nucleus)

accept mass number is total number of protons and neutrons for 1 mark 2

(ii) same number of protons or both have 6 protons

accept same atomic number 1

12C has 6 neutrons 1

14C has 8 neutrons 1

accept different number of neutrons for 1 mark

numbers, if given, must be correct

incorrect reference to electrons = max 2 marks

(b) (i) 2 bonding pairs 1

additional unbonded electrons negates this mark

4 unbonded electrons around oxygen 1

accept dot, cross or e or – or any combination

(ii) covalent 1

(iii) any one from: • no delocalised / free electrons

ignore mobile electrons • no overall electric charge

accept no charge (carriers) • no ions

1

do not accept any implications of the presence of ions

[9]

Q4. (a) (i) 7 / seven

1

(ii) 1

do not accept –1 1

Electron 1

(b) (i) (sodium + ) fluorine → sodium fluoride 1

(ii) compounds 1

(iii) sodium (atom) loses 1

fluorine (atom) gains 1

one electron 1

ions formed 1

allow sodium forms positive (ion) or fluorine forms negative (ion)

allow form ionic bond

allow to gain a full outer shell of electrons

allow forms noble gas structure

max 3 if reference to incorrect particle / bonding

(iv) Dissolve in water 1

High melting point 1

[11]

Q6. (a) fill burette with sodium hydroxide

1

add sodium hydroxide from the burette to the hydrochloric acid and indicator 1

stop when colour changes 1

measure volume used from burette 1

plus any two from: • stand flask on white tile • swirl • add dropwise near the endpoint • repeat

2

[6]