Coffee Cup Calorimetry PDF Read through the sample procedures

Experiment 25: Calorimetry

CHEM 111 Morning Lab. 27 October 2014. Experiment 25: Calorimetry. Conclusion: The unknown metal #14 has a specific heat of 0.36 J/g °C; the heat of

Experience Report on Adiabatic Reaction Calorimetry in Safety

In conclusion the evaluation method has no significant influence on the In summary it has to pointed out that an interpretation of an adiabatic experiment ...

Soda Can Calorimeter

In the 1770s Joseph Black (1728–1799) was one of the first scientists to conduct calorimetry experiments with different materials. He discovered that not

Experiment 8 Calorimetry

This experiment will require most of the time allocated to the lab period. If you Report: The laboratory report should include Tables 1-4 (add titles to ...

Calorimetry Lab Report On Planters Cashews Chemistry Period 3

2 дек. 2015 г. Conclusion. The hypothesis created at the beginning the lab was incorrect. Throughout the attempts of finding the amount of calories in a ...

AP CHEMISTRY SYLLABUS PHS 2017-2018

Notebook Laboratory Reports- Always include the following in each report: Title The title should be descriptive. Experiment 5 is not a descriptive title. Date

Example Calorimetry Lab Report #2 – Good or In Need of Lots of

26 окт. 2010 г. In this experiment the differences in caloric content of foods were investigated through the ignition of food items and the measurement of the ...

Physical Chemistry Lab Report Rubric –Veldman Fall 2012

We can conclude that the use of bomb calorimetry to determine the heat of combustion of sucrose was successful despite moderate experimental error. 3. Page 5

Physical Chemistry Lab Report Rubric –Veldman Fall 2012

Experiment 15: Specific Heat of a Metal

Sep 5 2013 Conclusions: The specific heat of two metals was determined experimentally. The technique utilized was calorimetry. A sample of each metal was ...

Writing a discussion

The discussion is the most important part of the laboratory report because it is here that you discussion for an introductory chemistry experiment.

Example Calorimetry Lab Report #2 – Good or In Need of Lots of

Oct 26 2010 In this experiment

Experiment 25: Calorimetry

CHEM 111 Morning Lab. 27 October 2014. Experiment 25: Calorimetry. Conclusion: The unknown metal #14 has a specific heat of 0.36 J/g °C;

Experiment 6 ? Calorimetry

Pre?lab questions Calorimetry is the science of measuring the quantities of heat ... customary to report its value on a per?mole basis. Thus we are.

Finding the Specific Heat of a Substance

To measure specific heat in the laboratory a calorimeter of some kind must be In this experiment

Coffee Cup Calorimetry

discussion of Pre-Lab Exercises regarding the difference in temperature is measured in calorimetry experiments. The ... and report its units.

Bomb Calorimetry and Heat of Combustion

Nov 7 2014 In this experiment we used a Parr bomb calorimeter to accurately ... Raw data for this experiment is included in the Results section

EXPERIMENT 12N CALORIMETRY

Aug 7 2018 Read the entire experiment and instructions

TEACHER PAGES

Chemistry

MATERIALS AND RESOURCES

EACH GROUP

balance data collection device graduated cylinder,

100 mL

sensor, temperature, stainless steel weigh boat ammonium chloride calcium turningshydrochloric acid, 0.5 M sodium hydroxide, 0.5 M

2 cups, 8-oz Styrofoam

with lids spoon, plastic water, distilled

Coffee Cup

Calorimetry

Measuring Heat Transfer

ABOUT THIS LESSON

I n this lesson, students will evaluate a sample investigation to review concepts and techniques required for quantifying heat exchange in a high school laboratory. With some guidance, students will design calorimetry investigations for the physical process of an endothermic dissolution and two exothermic chemical reactions.

OBJECTIVES

Students will:

• Review and evaluate sample procedures and data analysis for the heat exchange between metal and water in a coffee cup calorimeter • Design calorimetric investigations using parameters and assumptions for physical and chemical systems • Organize and analyze data to determine enthalpy changes for the processes carried out in their coffee cup calorimeters LEVEL

Chemistry

TEACHER PAGES

Chemistry - Coffee Cup Calorimetry

NEXT GENERATION SCIENCE STANDARDS

PLANNING/CARRYING OUT

INVESTIGATIONSANALYZING AND

INTERPRETING DATA

CONSTRUCTING EXPLANATIONS

DESIGNING SOLUTIONS

ENERGY AND MATTERSCALE, PROPORTION,

AND QUANTITY

PS3: ENERGY

ASSESSMENTS

The following types of formative assessments are

embedded in this lesson: • Assessment of student understanding through discussion of Pre-Lab Exercises regarding the sample investigation • Assessment of student-developed procedures and laboratory technique through active monitoring and questioning during investigation

ACKNOWLEDGEMENTS

Styrofoam

Brand is a registered trademark of The

Dow Chemical Company ("Dow") or an affiliated

company of Dow.

TEACHER PAGES

iii

Chemistry - Coffee Cup Calorimetry

COMMON CORE STATE STANDARDS

(LITERACY) RST.9-10.4

Determine the meaning of symbols, key terms, and

other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 9-10 texts and topics. (LITERACY) W.1 Write arguments to support claims in an analysis of substantive topics or texts, using valid reasoning and relevant and sufficient evidence. (MATH) A-CED.4 Rearrange formulas to highlight a quantity of interest, using the same reasoning as in solving equations. (MATH) N-Q.1

Use units as a way to understand problems and to

guide the solution of multi-step problems; choose and interpret units consistently in formulas; choose and interpret the scale and the origin in graphs and data displays.

CONNECTIONS TO AP*

CHEMISTRYCHEMISTRY

APAP A.2

The process of kinetic energy transfer

at the particulate scale is referred to in this course as heat transfer, and the spontaneous direction of the transfer is always from a hot to a cold body. B.1

Energy is transferred between systems

either through heat transfer or through one system doing work on the other system. B.2

When two systems are in contact with

each other and are otherwise isolated, the energy that comes out of one system is equal to the energy that goes into the other system. The combined energy of the two systems remains fixed. Energy transfer can occur through either heat exchange or work. B.3

Chemical systems undergo three main

processes that change their energy; heating/cooling, phase transitions, and chemical reactions. B.4

Calorimetry is an experimental technique

that is used to measure the change in energy of a chemical system. *Advanced Placement and AP are registered trademarks of the College Entrance Examination Board. The College Board was not involved in the production of this product.

TEACHER PAGES

Chemistry - Coffee Cup Calorimetry

TEACHING SUGGESTIONS

Calorimetry

Prerequisite Knowledge and Skills

Understanding the relationship between mass, heat, and temperature

Solving for variables using the equation,

q = mCT (Eq. A) Differentiating between exothermic and endothermic processes Working with thermochemical equations to calculate heat or chemical amounts Relating heat transfer to the law of conservation of energy

According to the law of conservation of energy,

0 = q gained + q lost (Eq. B) Manipulating the equation, the relationship between heat lost by one component of a system and the heat gained by another becomes q lost = q gained (Eq. C) This equation uses the same convention established in other lessons like "Mass, Heat, and Temperature" and "Burn, Baby, Burn." From the perspective of the system, the amount of heat gained (q gained ) is always a positive value. When values are substituted into the equation the directionality of heat lost (q lost ), always a negative value, is resolved and the magnitudes become equal. For the purposes of vertical alignment, check with the physics teachers to make sure that students are prepared for other variations of the heat variable. It is often q in chemistry but Q in physics. Students are trained that capitalization changes the variable entirely, such as with t (time) and T (temperature). If there is a difference between disciplines, make note of it with your students. Note that coffee cup calorimeters are not perfectly sealed and therefore maintain pressures equal to the barometric pressure in the room. The heat transfer, q, is equal to the change in enthalpy, H, for processes at constant pressure. Textbooks that introduce bomb calorimetry, referred to as constant-volume calorimetry, equate heat transfer to an overall change in energy, E. For the purposes of a first-year course, the approach to problem solving is the same for both types of calorimeters. The distinction between E and H, based on technical definitions for enthalpy, energy and work, is beyond the scope of the course. In the lab, students are asked to design their own procedures for three calorimetry investigations. A sample investigation - complete with procedures, data, and analysis - is presented to scaffold understandingquotesdbs_dbs2.pdfusesText_2

[PDF] Coffee Cup Calorimetry Read through the sample procedures

TEACHER PAGES

Chemistry

MATERIALS AND RESOURCES

EACH GROUP

100 mL

2 cups, 8-oz Styrofoam

Coffee Cup

Calorimetry

Measuring Heat Transfer

ABOUT THIS LESSON

OBJECTIVES

Students will:

Chemistry

TEACHER PAGES

Chemistry - Coffee Cup Calorimetry

NEXT GENERATION SCIENCE STANDARDS

PLANNING/CARRYING OUT

INVESTIGATIONSANALYZING AND

INTERPRETING DATA

CONSTRUCTING EXPLANATIONS

DESIGNING SOLUTIONS

ENERGY AND MATTERSCALE, PROPORTION,

AND QUANTITY

PS3: ENERGY

ASSESSMENTS

The following types of formative assessments are

ACKNOWLEDGEMENTS

Styrofoam

Brand is a registered trademark of The

Dow Chemical Company ("Dow") or an affiliated

TEACHER PAGES

Chemistry - Coffee Cup Calorimetry

COMMON CORE STATE STANDARDS

Determine the meaning of symbols, key terms, and

Use units as a way to understand problems and to

CONNECTIONS TO AP*

CHEMISTRYCHEMISTRY

The process of kinetic energy transfer

Energy is transferred between systems

When two systems are in contact with

Chemical systems undergo three main

Calorimetry is an experimental technique

TEACHER PAGES

Chemistry - Coffee Cup Calorimetry

TEACHING SUGGESTIONS

Calorimetry

Prerequisite Knowledge and Skills

Solving for variables using the equation,

According to the law of conservation of energy,