INFORMATION AND COMMUNICATION IN TECHNOLOGY

(SSI 3013)

GROUP B

SEMESTER 1 (SESI 2012/2013)

ASSIGMENT : INVESTIGATING WHETHER THE

TEMPERATURE CHANGE DURING THE RATE OF REACTION

LECTURER : EN.AZMI BIN IBRAHIM

NAME MATRIC NUMBERNUR HAYATI BINTI YUSOFF D20101037419

NORFARRAHDILAH BINTI AMIR D20101037438

Introduction

Nowadays we live in a world that full of technology where it keep on changing thus

our scientist need to have the facilities such as sensor and software in order for them

producing new technology. Data logger is one of the technology that been used in conducting

the science experiments in the school. It is used to store the data which includes many data

acquistion devices such as plug in boards or serial communication systems that use a

computer as a real time data recording system. The data that been stored could be pressure,

current, temperature, light intensity, soil moisture and resistance. It is compact, battery

powered devices equipped with an internal microprocessor, data storage and sensors. There

are three different type of data logger which are stand- alone data logger, web- based data

logger and wireless data logger.

First, stand-alone data logger is compact, reusable and portable where it will offer low

cost and easy setup and deployment. Internal –sensor models and external sensor models is

used for monitoring the logger location and monitoring at the logger location. For this stand-

alone logger, it often communicate with a PC or via a USB interface. Then, the web-data

logger. It is used to enable remote, around the clock access to data via GSM cellular or Wi-Fi.

These system can be configured with a variety of externalplug-in sensors and transmit

collected data to a secure web server for accessing the data. Lastly is the wireless data logger

where wireless data nodes transmit real-time data from dozens of points to a central PC,

eliminating the need to manually retrieve and offload data from individual data loggers.

The advantages using the data loggers is that they can operate independently of a

computer unlike many other types of data acquisition devices. If we using the data longger,

the chance of having an error is less. This is because the measurement of the data is always

taken at the right time. We as human usually make a mistakes when taking the reading like

forget to take a reading or take a reading too late or too early. Other than that, when we used

the data logger, mistakes are not made in reading the results compare to the human that often

make an errors in this experiment. Example that we can see is sometimes we are easy to

misread the temperature using the scale on a thermometer. Therefore, if we use data logger

doing the experiment, we can ignore the error that occur when taking the reading of the

temperature. In addition, we also can produced graphs and tables of the results of the

experiment automatically by the data logging software. This will save the time where we

need to plot for ourself the graph and table that we need in the experiment conducted.

ENGAGE

Engage is a method that elicits students’ ideas from their prior knowledge. Teachers

may elicit their ideas through a few questions so that teachers could know the level of the

students and where should they begin to teach the students. It creates a two ways

communication between teacher and students where students may share their knowledge

besides the teacher does. This engage is the method that used to attract the student's attention.

Through the question or picture given, the teacher will elicit students' idea on that particular

topic. This enables the teacher to know about the prior knowledge which the student

possesses on the particular topic. Other than that, engage will help students in the process of

think and give the idea about the question

One of the experiment that used the data logger is investigating whether the

temperature change during the rate of reaction. This experiment is carried out to find out

whether the exothermic nature of the reaction has an effect on the overall temperature of the

reaction. Rate of reaction is the speed at which a reaction happens. If a reaction has a low rate

it means the molecules combine at a slower speed than a reaction with a high rate. The factors

that affect the rate of reaction are surface area, temperature, catalyst and concentration of the

reactants. In this experiment, the factors that include is temperature. The temperature is

directly proportional to the kinetic energy of the particles in a substance. When the

temperature of the substance is high, more particle will collide with the greater intensity

which leads to the increase the rate of reaction of the substances. In this experiments, we will

determine whether the rate of reaction will give effect to the temperature change.

The questions that we need to answer in this experiments are :

1. Did the magnesium reacting effect the temperature of the reaction?

2. Would an increase in temperature matter as long as all the experiments went up by the

same amount?

3. How much did the magnesium reacting increase the temperature?

4. How will this affects the design of the fair test for the reaction?

EMPOWER

Empower is a method where experiment is conducted in a more systematic way and less

time concuming to increase students’ knowledge and understanding on particular topic.

Practical is important for them to expose themselves in the real situation and they understand

better about the scientific concepts. In empower, teachers will prepare some questions from

the easiest to the hardest for the students to answer so that they might empower their

knowledge. 

For this experiment, we need to find out whether the temperature change during the rate

of reaction. DrDAQ is used here with dual external temperature probes to compare the

change in temperature of two test tubes containing bench hydrochloric acid both at 50

degrees Celsius. One is used as a control whilst 1cm of magnesium is added to the other. This

is carried out to investigate whether the reaction has a noticeable relationship on the overall

temperature of the reaction and hence will effects the fair testing of the reaction. Thus we

need to have the equipments to start this experiment such as :

Magnesium + Hydrochloric acid → Magnesium Chloride + Hydrogen

Mg(s) + 2HCl(aq) →→→ MgCl2(aq) + H2(g)

When a metal or metal oxide reacts with an acid an exothermic reaction occurs. Thus we

need to have the equipments to start this experiment such as :

1. DrDAQ data logger connected to a PC

2. Two external temperature probes (DD100)

3. I M Hydrochloric acid

4. 1 cm lengths of magnesium ribbon

5. Two boiling tubes

6. Electric water bath or large beaker filled with water at 50 degrees Celsius

7. 25 cm3 measuring cylinder or 25 cm3 pipette

The method used in this investigating whether temperature change during a rate of

reaction are :

Figure 1 : Apparatus set up

1. 20 cm3 hydrochloric acid is measured and placed in two test tubes.

2. The hydrochloric acid is heated to 50 °C in a water bath.

3. The temperature in both test tubes is monitored using the DrDAQ.

4. 1cm of magnesium is added to 1 of the test tubes.

5. The temperature changes are monitor in both test tubes.

When carrying out the experiment, both test tubes need to be kept in the same

environment to ensure the experiment that been done is fair. The data collection should

continue for as long as the temperature keeps on changing. The result of the experiment is

shown in the graph below.

The result of the experiment is shown in the graph below.

Discussion

From the graph, we can see that when the reaction happen, the temperature will

change. It is same for the both test tube. In this experiment,we can see that when we added

the magnesium to the test tube, the temperature is affected by the rate of reaction. The time

taken for the reaction to occur is slower in the test tube without the magnesium ribbon.. From

the graph, we could see clearly the time is shorter in the test tube that has high temperature

compare with the test tube that has low temperature. Magnesium react with hydrochloric acid

because it is higher in the reactivity than hydrogen. When these two react a displacement

reaction will take place and the magnesium will take the place of hydrogen in hydrochloric

acid forming magnesium chloride and hydrogen gas.

The temperature are effected by the magnesium reacting in this reaction with the

hydrochloric acids. A temperature is the measure of the average kinetic energy of the

particles of a substance. Increasing the temperature will directly increasing the average

kinetic energy of the substances. This is because at higher temperature, the fraction of

molecules with energies greater than the activation energy (Ea) will increases. In a simple

words, the greater proportion of molecules or substances will have enough kinetic energy to

participate in the reaction.

From this experiment, we want to know whether the magnesium give effect to the

temperature of the reaction. Magnesium does affect the temperature of the reaction. If the

temperature is increase as long as all the experiments went up by the same amount, it would

be alright. A faster reaction rate could mean that the temperature could increase more if the

rate of reaction was faster and if you were using surface area as a factor, the temperature

could also be changing. Based on this experiment we only used 1 cm of magnesium ribbon.

Although the magnesium ribbon is only 1 cm, it could affects the temperature in this reaction.

If we want to know more about the effects of maagnesium on the temperature, we can

conduct other experiment using different length of magnesium ribbon. We can design the fair

test for this reaction by consider all the variables that need to be taken. Other than that, we

need to make sure the test is run in the same environment to prevent error that may occur as

well as continue to take the data while the temperature keep on changing.

ENHANCE

Enhance is actually a way to improve the student understanding by asking them to

think in a greater depth in order to answer the enhance section. It is a another method same

as the engage but the difference is that enhance is the application of the knowledge. Students

have to relate the scientific concept to the daily life so that they really understand the topics.

They have to think creatively and critically when answer the questions provided.

That is one of the situations that always happen to anyone of us. In the meantime, any germs

that may have been in the food when we purchased it could be going crazy, enjoying the

warmth and coziness of the kitchen.

From the experiment, we know that temperature and rate of reaction are related.

Temperature can changed by the influence of reaction rate. And reaction rate also are affected

by the temperature. However, temperature is a key factor affecting the rate of chemical

reactions. In general, as temperature increases, so does the reaction rate. This concept are

applied in our daily life. As we know, food cannot maintain its quality in long time. Food

goes bad because bacteria, mould and microbes attack it. This happen more quickly in warm

temperature, where as cold interrupts and even stop this process. So food will keep fresh for

longer in a fridge. This is the reason why food is stored in the refrigerator. The cold

temperature slows down the chemical reactions that lead to its spoiling. Keeping food

correctly chilled in the fridge slows down the growth of bacteria.

You pull into the driveway, car loaded up with groceries. You bring the bags into your

kitchen and set them on the counter… and the phone rings. You talk, hang up, and –

since you’re standing there – you check the answering machine and make a return

phone call. Then you run out to the mailbox and find a letter you’d been hoping to

receive for some time. You sit down to read it and answer it…. Finally you realize that –

oh, yes! – your food is still sitting there waiting for you to put away.

There are some steps we must follow to prevent bacteria from growing with the aid of

temperature.

1. At temperature between 5c and 63c c (the danger zone) bacteria on food can grow to a

point where they can make we ill. So, keep the fridge at 5c or below.

2. Place a mercury-free fridge thermometer on the bottom shelf above the salad drawer and

check the temperature once a week, ideally first thing in the morning.

3. The numbers on the fridge thermostat dial do not necessarily show the temperature

reading, so check the user handbook and use a thermometer to check the temperature.

4. Keep the fridge door closed tightly, as the temperature will rise if the door is left open.

5. Do not overpack the fridge, as this can stop cool air from circulating freely and the fridge

may not keep the foods properly chilled

6. Do not put hot food in the fridge as this can raise the fridge temperature.

The technique of keeping foods refrigerated are also been used in transporting fish from the

sea to the markets where they are sold. And it’s also a good idea to keep the dry foods out of

sunlight, they do best in a dry, cool, closed cabinet or pantry. Sunlight can heat up canned

items and cause them to go bad faster than we would expect.

Here are the refrigerator and freezer storage chart. This table shows how long a food can

maintain in good condition.

Conclusion

We can conclude that data logger can be used in teaching and learning. It help

students to conduct the experiments by using data logger device so that the students clear

about the significant of data logger in order to get more accurate result and help in data

collection. Since the data logger invove three main stages which is engage, empower and

enhance, all this will provided the students with the ideas what they want to do if they are

exposed with engage question. Other than that, it will also widen the students knowledge

when they move to the enhance stage. In this stage, they will improve their critical thinking

when answering the tough questions and apply the concept that have been learn to answer the

question. Students will involve actively in class if the teachers introduce the data logging

learning programme. It is clear that the used of data logger in learning process give benefit to

the learners especially the students.

Referens

Investigating whether temperature change and the rate of reaction. Get at

http://www.picotech.com/experiments/reaction_temperature/ on November 28,

2012.

Rate of reaction between hydrochloric acids with magnesium ribbon.

Get at http://www.123helpme.com/view.asp?id=122408 on November 28,

2012.

Grorge S. Hammond (2006). A correlation of reaction rates. Get at

http://crispin39.tripod.com/disemolec/hammond.pdf on November 28,

2012.

Nizam Uddin (Received 27 March 2012; accepted 17 April 2012. Interpolate the Rate of

Enzymatic Reaction: Temperature, Substrate Concentration and Enzyme

Concentration based Formulas using Newton’s Method. Get at

http://urpjournals.com/tocjnls/26_12v2i2_1.pd on November 29, 2012.

The effect of temperature on reaction rate. Get at

http://www.chemguide.co.uk/physical/basicrates/temperature.html on November

29,2012.