Flame Test Lab


Objective: To observe the relationship between various elements and their emission spectrum.

Introduction: Flame tests provide a way to qualitatively test for the presence of specific elements by seeing colored flames.  The heat of the bunsen burner excites the electrons in the atom, and this energy is released as the electrons “fall back” to their ground states. The color we see is a combination of the visible wavelengths of light emitted by the atoms.  

If you have a spectroscope you can also make quantitative observations. A spectroscope can be used to see a pattern of narrow lights called an emission (bright-line) spectrum.  The actually wavelengths of the spectrum serve as a quantitative test to determine atoms identities.  Each element has a different “pattern” of electrons so it will show a different combination of colors.  

In this lab, you will perform flame tests on seven different elements. You will use your observations to identify an unknown solution.  

Prelaboratory Questions:

1, Why do we see colors in the flame tests?

We see colors in the flame tests because of the heat from the flame excites the electrons and causes it to move to another shell, the energy is released once the electrons “fall back” to their ground state. The color we see is a combination of a visible wavelength that produces the visible light that we see. Each element has a different “pattern” of electrons. So the color combination may be different.

2, How will we be testing the substances qualitatively?

We will be testing the substances qualitatively by observing the flame colors.

Materials: Safety goggles, wood splints, tongs/tweezers, Bunsen burner, test tubes with various compounds


1, Safety goggles must be worn at all time

2, Many of these salts are toxic. If you come into contact with any of the compounds make sure to notify the teacher and wash the contacted area thoroughly. Wash your hands before leaving the lab!


1, Light the Bunsen burner (turn the gas on so you can just hear it, then use the striker)

2, Place the wood splint for each compound into the flame using tongs or tweezers- ONE AT A TIME!

3, Take note of the color of the flame and return the wood splint to the solution.

4, CLEAN UP YOUR STATION! Carefully put the stoppers back on the solutions! Make sure the station looks like it did when you started! Let me know if you need new splints!

5, Wash your hands thoroughly before leaving the laboratory

Data Table: make a section of your lab labeled Data Table and make a data table similar to the one below to record your observations.

Compound The color of Flame (qualitative) Wavelengths of light (in Å) (quantitative)
Barium Chloride Orange 5900 – 6200A
Calcium Chloride Red 6200 – 7500A
Copper (II) Chloride Green 4950 – 5700A
Lithium Chloride Violet 3800 – 4500A
Potassium Chloride Orange 5900 – 6200A
Strontium Chloride Red 6200 – 7500A

Discussion and Analysis: (In a section labeled Discussion and Analysis answer the following questions in complete sentences)

1, How do your results from the flame test provide support for quantized energy levels? Explain your answer.

By heating the compound, the electrons got excited and jump to a higher energy. At the electrons “fall back” to their ground state, they emit energy  (photon). The different element has a different pattern of electrons, therefore it has a different energy level. While releasing the energy, they also produce visible light as a result of a combination of visible wavelengths. This allows us to see the colors of the flame (qualitative data). The result collected from the flame test provide support for quantized energy levels as it provides the color for different compound and allowed us to look up the wavelength of different light color.






ក. រង្វាស់កាព្យ​ : 

ក្នុង១វគ្គ មាន៤ឃ្លា ក្នុង១ឃ្លាមាន ៧ព្យាង្គ្គ​ ។

ខ. ចួនក្នុងវគ្គ : 

ព្យាង្គ្គទី៧ នៃឃ្លាទី១​ ចួននឹងព្យាង្គ្គទី២ ឬព្យាង្គ្គទី៤ នៃឃ្លាទី២ ។

ព្យាង្គ្គទី៧ នៃឃ្លាទី២ ចួននឹងព្យាង្គ្គទី៧ នៃឃ្លាទី៣ ហើយចួននឹងព្យាង្គ្គទី២ ឬព្យាង្គ្គទី៤ នៃឃ្លាទី៤ ។

គ. ចួនឆ្លងវគ្គ: 

ព្យាង្គ្គទី៧ នៃឃ្លាទី៤ ក្នុងវគ្គមុន ចួននឹងព្យាង្គ្គទី៧ នៃឃ្លាទី២ ក្នុងវគ្គបន្ទាប់ ។

ឃ. កំណត់សម្គាល់: 

បើសិនជាកំណាព្យចួន​នឹងឃ្លាទី២ រាល់វគ្គក្នុងកំណាព្យត្រូវចួននឹងឃ្លាទី២ ។ ហើយបើសិនជា កំណាព្យចួននឹងឃ្លាទី៤ រាល់វគ្គក្នុងកំណាព្យត្រូវចួននឹងឃ្លាទី៤


(និពន្ធដោយ ឈឺន ឈឿ)


ព្យាង្គ្គទី៧ នៃឃ្លាទី១ ក្នុងវគ្គទី១  ​​ ជួននឹង ព្យាង្គគ្គទី៤ នៃឃ្លាទី២ ក្នុងវគ្គទី១ ។

ព្យាង្គ្គទី៧ នៃឃ្លាទី២ ក្នុងវគ្គទី១   ជួននឹងព្យាង្គទី៧ នៃឃ្លាទី៣ ក្នុងវគ្គទី១ ហើយជួននឹង

ព្យាង្គទី៤ នៃឃ្លាទី៤ ក្នុងវគ្គទី១ ។


ព្យាង្គ្គទី៧ នៃឃ្លាទី៤ ក្នុងវគ្គទី១   ជួននឹងព្យាង្គទី៧ នៃឃ្លាទី២ ក្នុងវគ្គទី២ ។

Pchum Ben

During Khmer class, we were working on writing a report about a ceremony called Pchum Ben. Pchum Ben is a ceremony that dedicates those the spirits that we believe are in hell. People believe that during this ceremony, in a period of 15 days, those spirits are freed from hell to get food from their family. So, we wrote a report about the celebration of the ceremony, apparels to go to the pagoda and the history about this event.

Coming of Age Narrative Essay

In English literacy, we have done one main project which is a narrative essay about coming of age. It took us a few weeks to brainstorm, write, revise and finalize. At first, we brainstorm the moment that we feel important in our life, a moment that we feel more mature, the coming of age moment. Second, we try to write up to two to three pages. Then, we revise both grammatical errors and the context, to ensure that it makes sense. Next, we edit with a partner. Lastly, we evaluate ourselves with a rubric. In doing this process, we also learn about parallel sentences and concision.

Friction Lab

Physic is a quite hard subject to comprehend because there aren’t a lot of real examples to represent the equations. One of the things we did in class was a lab experiment. Using tape, and different sandpapers on a wooden ramp, we tried to find the coefficient of friction to make the object moves.
Picture of the activity is being sent…

Advanced Placement Statistics (AP Stats)

AP Statistics is important not because you can take an exam and get credits for the university, but because of the effectiveness of it. Unlike geometry, algebra or trigonometry, you can use it in everyday life. You can use this skill to analyze statistics and predicting values. For example, you would use an equation that has two variables to plug in one value and predict another. 

Women of the Future poem

Women of the Future

I am a child.
I am all the things of my past.
I am the technologist of my mother, strong and intelligent.
I am the thinker of my father, tall and competent.
I am the braininess of my mother.
I am all I see
My little brother studying hard, to prepare for his test and quiz.
Mom cooked food in the evening for whole family.
Talling buildings that are always changing.
My friends studying and discussing with me in the class.

I am all I hear
Water dropping off the plants.
Sound of people singing.
Wind blowing the leaves like boiling water.
People throwing rubbish like the sound of stepping on plastic.
I am all I feel and taste
Stepping on the wet floor.
Flavourful taste of fried ginger with pork, I eat with my family.
Cool weather at night in the forest.
Fried potato chips my parents made for me.
And all I remember.
The first trip with the whole school.
Going to Phnom Tamao zoo.
Playing with my old friend in the school.
Finding out the answer in math class.

I am all I have been taught
Learning grammar in all of my school.
Writing article and essay in class.
Typing on the computer.
Playing football and swimming.

I am all I think
Cambodia will become a developed country.
People reduce, reuse and recycle the plastic.
Children will get more education.
All people will have good livelihoods.
I am all those things.
I am like a puppy.
And these things are my mew
But one day
I will escape
And be free
I’m the women of the future. Malika

I Am From Poem

This is another type of poem that we took the format from the textbook. Every student in our school wrote their own poem and below is my writing.


I am from soccer, and basketball,

And I am from fried hot chicken, and fried ginger.

I am from school, and pagoda,

And I am from frisbee, and typing web.

I am from my aunt, my parents, and my friends,

And I am from meeting each other every Chinese New Year, and I am from going to pagoda every Pchum Ben.

I am from Unbroken, and Jurassic World,

And I am from Preah Vihear with Eco 3, and I am from visiting Thailand with family.

I am from Literacy, math, and Science Technology,

And I am from sofa, and refrigerator.

I am from Phnom Penh, and I am from Cambodia,

But most of all, I am from Happiness and Care.

Thanks for reading. I hope you enjoyed!

Who Am I poem

In my Literacy class, we have practiced writing a poem from the textbook we learnt. It is pretty much similar to a short description of who you are. Enjoy your reading!

am Malika.
I am 13 years old
and I’m the first child in my family!
I live in Phnom Penh, capital of Cambodia.
I enjoy myself learning math and science,
but literacy is the first choice of all.
My favorite sport is frisbee.
I love school and family
and also all my friends.
I am Malika.

English Writing – Literacy Class


I go to an unusual school. It’s called Liger Learning Center (LLC). Currently there are only 50 students in this school. Students here do not pay money to come to school because we all were selected by doing difficult tests. This school is a boarding school which is so different from most of the schools in Cambodia because a lot of them are just government or private schools that students go to learn in the morning and then come back in the afternoon. As Liger is a boarding school, there are presently four houses. Those houses are for students who are from the provinces. We learn five days a week, but our study curriculum does not follow the government schools. We have this irregular class which is called Exploration. Exploration is the class that we focus on one subject and learn about it for seven weeks. There are usually four explorations during seven weeks. A lot of Explorations have trips to go outside into provinces or other countries. During the weekends we have other activities such as Karate, Khmer Dance, Hip Hop and Frisbee. These classes are chosen by the students themselves. All students can rest and do their homeworks on weekend also and get ready to class on Monday. Out of all I think that this is a really good school because we do not copy the learning curriculum from other school and we have special opportunities to learn new things from a lot of people in different ways.