We welcome your feedback

Taking part in a short anonymous survey will help us to make your site experience better.

DISCOVER THE WORLD OF SCIENCE WITH EVONIK: "Baking Powder Fire Extinguisher"
You want to know how to put out a candle without blowing it out? Find out how by following the instructions below.
You want to know how to put out a candle without blowing it out? Find out how by following the instructions below.

What you need: 

Lighter 
Candle in a glass 
Empty glass 
Backing soda or Kaisernatron 
Spoon 
Vinegar 


How the experiment works: 

1. Place the tea light in a glass and light it. 
2. Fill a teaspoon with baking soda or Kaisernatron and carefully fill the soda into the empty glass. 
3. Carefully add vinegar to the soda.
4. Now hold the glass with the vinegar baking soda mixture over the candle and pretend to pour it out without letting any liquid run out of the glass.  

What did you observe? 


What happened:  A candle can only be lit and burn, if three things come together: Wax and wick, heat and oxygen. The liquid wax rises the wick and the heat of the flame splits the wax particles (pyrolysis). Now the oxygen comes into play, which reacts with the very reactive fragments. Carbon and water are formes and energy is released in the form of light and heat. The created carbon forms small soot particles which glow in the flame and then burn to carbon dioxide in the middle very hot part of the flame. If the flame is cooled down at this point by blowing into it or by wind draught, the candle will soot


Explanation: Soda or sodium hydrogen carbonate (from the baking soda) reacts with vinegar to form carbon dioxide (CO2). Carbon dioxide is not combustible and because it is heavier than air, the glass fills up slowly. If you now "pour" the glass over the candle, the carbon dioxide displaces the oxygen around the flame and thus prevents it from continuing to burn. 


Watch our video tutorial:


Find more experiments in our Gallery

TAGS
#ExploringOpportunities
#YoungSpirit
#News
#GrowingTogether

News
PEOPLE STORY
People Story - Giordano
Giordano is warehouse Manager in Italy and tells us, why it is important to love what you do.
Evonik partners with FEMTEC
Interview Thomas Schiener about FEMTEC
What goals associates the Head of HR Talent Management with this membership?
Bookboon
How productive are you?
Learn to achieve more in less time with our great eBook suggestions!
News
EVONIK IS ONE OF THE BEST EMPLOYERS FOR WOMEN
Employer study by the Brigitte magazine once again names Evonik as one of the best companies for women.
EVONIK PARTNERS WITH FEMTEC
Evonik partners with Femtec
Through this extensive network, Evonik supports the exchange of science and business and is in contact with the talents of tomorrow.
News
APPLICANT INFORMATION ON COVID-19
Until further notice, all job interviews will take place virtually to protect our applicants and employees.
VIRTUAL CAREER FAIRS (U.S.)
LOOKING FOR A NEW JOB?
This September, you can get in touch with Evonik virtually at many different career fairs! Check out our full list and register online.
Students@Evonik
The Return of the Intern
Mikayla tells us in her students@Evonik article about her experiences in the Care Solution Department in Richmond.
News
UNITECH General Assembly week 2020
This year the UNITECH General Assembly Week took place virtually.
Meet the Team
HOW DO INNOVATIONS ARISE AT EVONIK?
In an interview, Carlos explains what it takes to make every employee at Evonik feel like an innovator.
News
EVONIK IS "LEADING EMPLOYER"
For the third time in a row, Evonik was awarded the first place in the chemicals sector and improved significantly in the cross-sector ranking.
ONBOARDING@EVONIK
THE NEW HIRE VLOG EPISODE 3 IS LIVE
Marvin and Maria introduce you to the International Sales and Marketing program (ISAM) and talk about the opportunities it offers.
News
EVONIK WINS SUSTAINABILITY CONTEST
Patrik Stenner, process engineer at Evonik, wins the Responsible Care contest of the German Chemical Industry eV.
Meet the team
"EVERYONE MUST BE ABLE TO RELY ON EACH OTHER"
Rianne talks about her dual studies and her exciting practical time at Evonik in Antwerp.
students@Evonik
STUDENTS@EVONIK AT THE ASIA RESEARCH HUB IN SINGAPORE
Claris, Sean, Andrei and Daryl take you with them on their journey as interns at the Evonik Research Hub in Singapore.
EBOOKS
STRENGTHEN YOUR SKILLS FROM ANYWHERE
The eLibrary, sponsored by Evonik, allows you to download eBooks on various topics to any device for free.
eBuddy
eBuddies at Evonik: Employees help their colleagues with digital problems
To ensure that every employee receives help with digital problems as quickly as possible, the "eBuddy" project was launched this year. More than 200 employees already support their colleagues with digital expertise.
Let's Chat
Let's Chat