Australian International School, HCMC

Group 4 Internal Assessment Marking Form

Candidate’s Name (Family Name, Given Name)Tam Hieu Nguyen

IB Candidate Number:200892275

Instructors Name: Mr.Armstrong Subject and Level:Physics

Date Performed

Research Question: Q = mc∆T

Q=heat energy M=massC=specific heat ∆T=change in temperature

LEVELS AWARDEDPersonal Engagement

 /2Exploration

/6

Analysis/6

Evaluation/6

Communication/4

TOTAL/22

NOTE: A score of ZERO (0) in any category indicates that that category of the report does not reach the minimal level as described in the category

PERSONAL ENGAGEMENT LIMITED (1) SIGNIFICANT (2) Mar

kThe evidence of personal engagement with the exploration is limited with little independent thinking, initiative or creativity.

The evidence of personal engagement with the exploration is clear with significant independent thinking, initiative or creativity.

The justification given for choosing the research question and/or the topic under investigation does not demonstrate personal significance, interest or curiosity.

The justification given for choosing the research question and/or the topic under investigation demonstrates personal significance, interest or curiosity.

There is little evidence of personal input and initiative in the designing, implementation or presentation of the investigation.

There is evidence of personal input and initiative in the designing, implementation or presentation of the investigation.

EXPLORATION

NOT FOCUSED/SUPERFICIAL – MARK (1-2)

NOT FOCUSED BUT RELEVANT – MARK (3-4)

FOCUSED/MAJOR FACTORS ADDRESSED – MARK (5-6)

Mark

The topic of the investigation is identified and a research question of some relevance is stated but it is not focused.

The topic of the investigation is identified and a relevant but not fully focused research question is described.

The topic of the investigation is identified and a relevant and fully focused research question is clearly described.

The background information provided for the investigation is superficial or of limited relevance and does not aid the understanding of the context of the investigation.

The background information provided for the investigation is mainly appropriate and relevant and aids the understanding of the context of the investigation.

The background information provided for the investigation is entirely appropriate and relevant and enhances the understanding of the context of the investigation.

The methodology of the investigation is only appropriate to address the research question to a very limited extent since it takes into consideration few of the significant factors that may influence the relevance, reliability and sufficiency of the collected data.

The methodology of the investigation is mainly appropriate to address the research question but has limitations since it takes into consideration only some of the significant factors that may influence the relevance, reliability and sufficiency of the collected data.

The methodology of the investigation is highly appropriate to address the research question because it takes into consideration all, or nearly all, of the significant factors that may influence the relevance, reliability and sufficiency of the collected data.

The report shows evidence of limited awareness of the significant safety, ethical or environmental issues that are relevant to the methodology of the investigation*.

The report shows evidence of some awareness of the significant safety, ethical or environmental issues that are relevant to the methodology of the investigation*.

The report shows evidence of full awareness of the significant safety, ethical or environmental issues that are relevant to the methodology of the investigation*.

* This indicator should only be applied when appropriate to the investigation.Academic honesty statement

I declare that the work attached herewith is my own and contains my own words and ideas. Any work other than my own is only used as reference and is cited appropriately – failure to do so is plagiarism resulting in an automatic zero. In the event plagiarism occurs, an academic honesty report will be filed with the guidance office.Candidates Signature:

ANALYSISINSUFFICIENT/INCOMPLETE –

MARK (1-2)RELEVANT/INCOMPLETE – MARK

(3-4)FOCUSED/MAJOR FACTORS ADDRESSED – MARK (5-6)

Mark

The report includes insufficient relevant raw data to support a valid conclusion to the research question.

The report includes relevant but incomplete quantitative and qualitative raw data that could support a simple or partially valid conclusion to the research question.

The report includes sufficient relevant quantitative and qualitative raw data that could support a detailed and valid conclusion to the research question.

Some basic data processing is carried out but is either too inaccurate or too insufficient to lead to a valid conclusion.

Appropriate and sufficient data processing is carried out that could lead to a broadly valid conclusion but there are significant inaccuracies and inconsistencies in the processing.

Appropriate and sufficient data processing is carried out with the accuracy required to enable a conclusion to the research question to be drawn that is fully consistent with the experimental

data.The report shows evidence of little consideration of the impact of measurement uncertainty on the analysis.

The report shows evidence of some consideration of the impact of measurement uncertainty on the analysis.

The report shows evidence of full and appropriate consideration of the impact of measurement uncertainty on the analysis.

The processed data is incorrectly or insufficiently interpreted so that the conclusion is invalid or very incomplete.

The processed data is interpreted so that a broadly valid but incomplete or limited conclusion to the research question can be deduced.

The processed data is correctly interpreted so that a completely valid and detailed conclusion to the research question can be deduced.

EVALUATIONNOT RELEVANT/SUPERFICIAL

– MARK (1-2)SOME RELEVANCE/DESCRIPTIONS –

MARK (3-4)FULLY JUSTIFIED/

DESCRIBED/RELEVANT– MARK (5-6)

Mark

A conclusion is outlined which is not relevant to the research question or is not supported by the data presented.

A conclusion is described which is relevant to the research question and supported by the data presented.

A detailed conclusion is described and justified which is entirely relevant to the research question and fully supported by the data presented.

The conclusion makes superficial comparison to the accepted scientific context.

A conclusion is described which makes some relevant comparison to the accepted scientific context.

A conclusion is correctly described and justified through relevant comparison to the accepted scientific context.

Strengths and weaknesses of the investigation, such as limitations of the data and sources of error, are outlined but are restricted to an account of the practical or procedural issues faced.

Strengths and weaknesses of the investigation, such as limitations of the data and sources of error, are described and provide evidence of some awareness of the methodological issues involved in establishing the conclusion.

Strengths and weaknesses of the investigation, such as limitations of the data and sources of error, are discussed and provide evidence of a clear understanding of the methodological issues involved in establishing the conclusion.

The student has outlined very few realistic and relevant suggestions for the improvement and extension of the investigation.

The student has described some realistic and relevant suggestions for the improvement and extension of the investigation.

The student has discussed realistic and relevant suggestions for the improvement and extension of the investigation.

COMMUNICATION

UNCLEAR WITH ERRORS – MARK (1-2) CLEAR AND ERRORS DO NOT HAMPER UNDERSTANDING – MARK (3-4)

Mark

The presentation of the investigation is unclear, making it difficult to understand the focus, process and outcomes.

The presentation of the investigation is clear. Any errors do not hamper understanding of the focus, process and outcomes.

The report is not well structured and is unclear: the necessary information on focus, process and outcomes is missing or is presented in an incoherent or disorganized way.

The report is well structured and clear: the necessary information on focus, process and outcomes is present and presented in a coherent way.

The understanding of the focus, process and outcomes of the investigation is obscured by the presence of inappropriate or irrelevant information.

The report is relevant and concise thereby facilitating a ready understanding of the focus, process and outcomes of the investigation.

There are many errors in the use of subject specific terminology and conventions*.

The use of subject-specific terminology and conventions is appropriate and correct. Any errors do not hamper understanding.

Parents Signature:

I have viewed my son/daughters work                                                                                                                                                                                                                                       . Date:                                                                                                                   .

SPECIFIC HEAT CAPACITY OF COOKING OIL

1. Research Question

How to measure the specific heat capacity of cooking oil? 2. Theory/Background

specific heat capacity is the quantity of heat required to raise the temperature of a unit of mass of a substance by a unit change in temperature.

C=Q/m∆T (heat capacity= heat energy divide by mass multiply with the change of temperature)

where ∆Q is the change in heat content in Joules, m is the mass in kg, c is the specific heat capacity in J/kg0c and ∆T is the change in temperature in 0C or K.

In order to make object’s temperature increase then the internal energy must also increase.

Internal energy: Internal energy is defined as the energy associated with the random, disordered motion of molecules. (http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/inteng.html)

different object’s require different amounts of energy to increase their temperature.

what is specific heat capacity used for in daily life? why is it important?Application of Specific Heat capacityAs we have read (supposedly) about the concept of heat capacity and specific heat capacity, we will discuss briefly about the application of Specific Heat capacity in daily situations.

1. Substances having a small specific heat capacity can be quickly heated up, it also experience a big change in temperature even though only small amount of heat is supplied.

2. Substances having a small specific heat capacity, are very useful as material in cooking instruments such as frying pans, pots, kettles and so on, because, they can be quickly heated up even when small amount oh heat is supplied.

3. Sensitive thermometers also must be made from materials with small specific heat capacity so that it can detect and show a change of temperature rapidly and accurately.

4. Substances that have a high specific heat capacity is suitable as a material for constructing kettle handlers, insulators and oven covers, because, a high amount of heat will cause only a small change in temperature aka the material won't get hot too fast!

5. Heat storage instruments are very useful and they are usually made of substances with a high specific heat capacity.

6. Water as a cooling agent acts excellent as a cooling agent in engines. Water is also used in houses in cold climate countries because as it is heated up (boiled) it tends to retain heat and warm the house due to its high specific heat capacity. (http://fiziknota.blogspot.com/2008/06/application-of-specific-heat-capacity.html)

Why is specific heat capacity important on earth? A large body of water can absorb and store a huge amount of heat from the sun in the daytime and during summer while warming up only a few degrees. And at night and during winter, the gradually cooling water can warm the air. This is the reason coastal areas generally have milder climates than inland rtegions. The high specific heat of water also tends to stabilize ocean temperatures, creating a favorable environment for marine life. THus because of its high specific

heat, the water that covers most of Earth keeps temperature fluctuations on land and in water within limits that permit life. Also, because organisms are primarily made of water, they are more able to resist changes in their own temperature than if they were made of a liquid with a lower specific heat. (https://answers.yahoo.com/question/index?qid=20070915141343AACj675)

3. Aim

Use the specific heat capacity of water that has been given to find the change in energy of oil and specific heat capacity of oil.

4. Variables

State all dependent, independent, controlled and uncontrollable variables along with an explanation.  This is best done in a table format.

Variable Type

Variable Method of Management

Independent Volume of water and cooking oil / the mass of the beaker / the heat of the bunsen burner / the type of liquid

Replace of different material ( mass of the beaker / kg )Put more or less cooking oil and water ( ml )Change the power release of the bunsen burner  Change the liquid from water to cooking oil.

Dependent Water and cooking oil specific heat capacity

Measure the mass of beaker and 100ml of water and the time of changing the heat of the water to calculate the specific capacity of water .By then calculate the power output of the bunsen burner , the mass of 100 ml of cooking oil and the time of changing the cooking oil’s heat to calculate the cooking oil’s specific capacity.if not then the result will be very different and not accurate.

Controlled The volume of water and cooking oil

Measure exactly 100 ml of water and cooking oil for accurate result, if not then the result will be very different and not accurate.

temperature when two of the liquid reach 80 0C, if not then the final result will be different and not accurate, because is it didn’t reach 800C then the time will be shorter which make the result not accurate

Mass of the beaker Measure the beaker in kg and keep it constant, if not then the result will be very different and not accurate.

Uncontrollable The air and temperature around the room

Make the heat from the Bunsen burner unstable and the heat that transferred to the beaker will not be constant.

5. HypothesisFrom my knowledge, I know that oil is lighter than water because it always flow when we mixed them together. Moreover, the specific heat capacity that the worksheet given me is 4200 J/kg0C, I predicted that the specific heat capacity of oil will decrease approximately to 3000 or 2500 J/kg0C. In additional, the mass of oil is lighter than water and this is direct proportional with the specific heat capacity, heat energy and the time it needs to reach 800C. Last but not least, in my theories and background part I said that every substance will require different amount of energy to increase the temperature and I found that specific heat capacity for oil is 2000J/kg0C. As a conclusion, every number that we calculate for oil will be smaller compared to the number that we have for water.

6. Apparatus

1. Bunsen burner: (http://media-2.web.britannica.com/eb-media/73/63573-004-7CF1F150.jpg)

2. 250ml Beaker: (http://exchangedownloads.smarttech.com/public/content/0c/0c590c87-d1d2-41f8-b463-9e78bb3bef2a/previews/medium/0001.png)

3. Thermometer: (https://www.google.com/search?q=thermometer&es_sm=91&source=lnms&tbm=isch&sa=X&ved=0CAcQ_AUoAWoVChMIpLTEkvyOyQIVwTemCh0OEgQ8&biw=1440&bih=712#imgrc=n2cX4PGXLXtVaM%3A)

4. Tripod(not for camera :))) ) : (http://www.proprofs.com/flashcards/upload/a4632045.jpg)

5. Gauze: (http://kalyx.com/images/full/images_SP/SP_15101.jpg)

6. Electronic scale: (http://i00.i.aliimg.com/wsphoto/v0/568101714/Precisio

n-Electronic-Scale-Hot-font-b-Sale-b-font-Digital-Balance-font-b-Weight-b-font.jpg)

7. 100ml of water: (http://genblock.com/wp-content/uploads/2015/08/water-hd-desktop-wallpapers-for-widescreen-abstract-picture-water-wallpaper.jpg)

8. 100ml of Cooking oil: (http://exportimport.com.vn/uploads/images/Tuong_An_Cooking_Oil.jpg)

9. Gas supply for the bunsen burner: (http://www.calor.co.uk/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/c/y/cylinder_butane_15kg.jpg)

10. Calculator: (https://www.sheffield.ac.uk/polopoly_fs/1.40737!/image/calculator.jpg)

11. Stop watch: (http://static.coleparmer.com/large_images/9446180.jpg)

12. Set up: (http://www.mstworkbooks.co.za/natural-sciences/gr7/images/gr7ec02-gd-0028.png)

7. Method

Method: water 1. Measure the mass of your beaker using the electronic scales. 2. Half fill the beaker with approximately 100ml of water and use the

electronic scales to calculate the mass of water in your beaker.3. Measure the initial temperature of your water using the thermometer.4. Place your beaker of water over the Bunsen flame (blue flame) and start

your stopwatch.5. Time how long it takes the water to reach 800C.6. Stop your stopwatch and turn off your Bunsen burner the instant the

temperature reaches 800C.7. Calculate the heat energy added to the water using Q = mc∆T (cwater =

4200j/kg 0C)8. Calculate the Power output of the Bunsen burner using Power = Q / t

Now you know the power output of the blue flame of your Bunsen burner, you can calculate the specific heat capacity of cooking oil.

Method: oil1. Clean your beaker with paper towel to get all water out of it.2. Measure the mass of your beaker using the electronic scales. 3. Fill the beaker with approximately 100ml cooking oil and use the electronic

scales to calculate the mass of cooking oil in your beaker.4. Measure the initial temperature of your cooking oil using the thermometer.5. Place your beaker of oil over the Bunsen flame (blue flame) and start your

stopwatch.6. Time how long it takes the oil to reach 800C.7. Stop your stopwatch and turn off your Bunsen burner the instant the

temperature reaches 800C.8. Calculate the specific heat capacity of the cooking oil.

Be careful because it will be very hot and dangerous.

8. Results/Data Collection

water recorded data SI unit

Mass of the beaker 116.5 g 0.1165 kg

mass of the beaker with 100ml of water 208.3 g 0.2083kg

initial temperature of water 250C 250C

Final temperature of water 800C 800C

Time it took for the water to reach 800C 5 minutes and 7seconds 307s

the mass of the liquid without the mass of the beaker: 0.1165-0.2083= 0.0918

The change in temperature: 800C- 250C= 550C

Oil Recorded data SI unit

Mass of beaker 116.5 g 0.1165kg

Mass of beaker with 100ml of oil 200g 0.2kg

initial temperature of oil 260C 260C

final temperature of oil 800C 800C

time it took to reach 800C 3 minutes and 44 second 224 seconds

The mass of the oil without the mass of the beaker: 0.2-0.1165= 0.0835 kg

the change in temperature: 800C-260C= 54 0C

9. Analysis/Data Processing and Presentation

formula for heat energy= mc∆TQ = mc∆T

Q=heat energy (calories)M=mass(kilogram) C=specific heat (j/kg 0C)∆T=change in temperature (Seconds)

Formula for Power= Heat energy divided by timePower= Q/T

Q= heat energy (calories)T= Time (seconds)

Water:calculate the heat energy added to the water: 0.0918 X 4200 X (80-25) = 21206 J

Calculate the power output of the Bunsen burner: 21206/307= 69.07 W

Oil: Calculate the heat energy added to the oil: 69.07 X 224= 15471.68 J

Calculate specific heat capacity of cooking oil: 15471.68÷ (0.0835 X (80-26)) = 3431.3 (J/kg0C)

10. Evaluation

Our experiment was conducted successfully however we did not get the exact result due to some errors of the measurement and surrounding factors. The researched value for specific heat capacity of oil is 2005 however we got 3431.3 J/kg0C. Some errors and improvement are in the box below.

Weakness/Limitation Impact on Results ImprovementOnly do it once Not accurate result Do it at leasts 3 timesDecimal places and significant figure Not accurate result take all numberusing digital thermometer for better measurement

less accurate result Use digital thermometer

Eyes perspective toward the measure of 100ml of water and oil. In additional the eyes perspective for the thermometer

Less accurate result change the eyes perspective.

Significant heat loss due to the surrounding or room temperature

Less accurate, because the time will take longer to reach 80 degrees

20 degrees to 25 is good enough, we should do more than 3 times and every times and each times with different room temperature.

11. Conclusion

My hypothesis was wrong about the specific heat capacity of oil. Furthermore, my result was very different from the research result, which is 3431.3 compare to 2005 J/kg0C. If I have a chance, I’ll do the experiment again and the result will be more accurate when I fix my wrong in the evaluation part. Beside this experiment, I would love to do more experiment about heat capacity, for instance: gold, copper, milk, oxygen and solid that melt which is molten.

12.Reference List

Include in the text and picture.