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This Friday ( June 11 ) , we will research the eruptive kingdom of acerb - alkali chemical science in our new kids video series : Summer School with Live Science .
In this week ’s installment , Live Science producer , Diana Whitcroft , will demonstrate the chemical reaction betweensodiumbicarbonate ( bake soda ) and citric battery-acid ( Citrus limon juice , in this grammatical case ) . This fun experiment is a peachy way to introduce young thinker to the world ofchemistry .
Every Friday at 3 p.m. EDT ( 12 p.m. PDT ) , Diana will host Summer School With Live Science , which you may find live onLive Science ’s Facebook , YouTubeandTwitterpages . Every week , the series will explore a unlike field ofSTEM(science , engineering , engineering and mathematics ) through simple hands - on experimentation that you and your child can follow along with at plate .
Disclaimer : It is powerfully give notice that all skill experiment , recipe and methods be attempted only under grownup supervision . Adults are take to handle or attend with any potentially harmful utensils and element . Always launder hands soundly after essay any experiment . Avoid touching your case and eyes when performing any experiments , and if possible , fatigue specs or condom goggles . Do not assimilate any of the ingredients during or after do this experimentation .
Lemon Volcanoes: Materials
Age Range : 5 - 10 years
Step One: Prep Your Work Station
Place your tray on a surface that has been well - covered with newspaper . Optional : Place paper on your tray ; this is where you ’ll be erupting your volcano and if the composition catches the colorful liquid , you could turn it into art .
Step Two: Ready Your Lemon
Have an grownup cut a small component of the bottom off the lemon so that it resist upright . Then , reduce off the top of the stinker , exposing the inner pulp and juice . Using your popsicle stick , mash the interior of the maize so that the " meat " or fleshy interior is completely pushed down and the lemon is fill up with mostly juice . Be measured not to puncture the lemon rind .
Step Three: Choose a Color
Squeeze a few drops of your food coloring into your maize . The amount of food coloring you use is subordinate on the size of your lemon and how much succus it yields . Small lemons with very little succus : 2 - 3 drops . Large lemons with a lot of juice : 4 - 5 drops . attempt different color combinations and see what issue forth out ! you could even erupt two or three lemons at a time for a tie - dye effect on your composition . Then , give a good pip-squeak of dish soap into your lemon .
Step Four: Erupt Your Volcano
Using your spoon , sprinkle into your lemon a few teaspoons of bake soda . Again , depending on the size of it of your lemon , you ’ll need to adjust the amount . humble lemon yellow with niggling succus : 2 - 3 tsp . Large lemon with a lot of juice : 4 - 5 tsp . Right away , you should see bubbling and fizzing , but it is likely that you ’ll need to practice your spoon or popsicle sting to good mix the juice and baking tonic . Your maize will now take off to overflow with colorful bubbles .
Document this experience and send images to us either on social medium or tocommunity@livescience.com . We ’d get laid to see your upshot so that we can have them in our photo gallery !
Step Five: Paint!
Now that the explosive playfulness is over , it ’s time to get originative . Using your hands , a blusher brush or even sponger , make your own works of art from the colorful liquid state left behind on the paper . Simply remove your lemons and go to townspeople ! Be certain not to over - paint your newspaper publisher . Combining your color too much will turn your colorful canvas into a swelled gray blob , ( unless of class you really like the color gray ! ) .
The science behind lemon volcanoes
When the baking pop was added to the lemon tree succus , it babble and foamed . That is because when atomic number 11 bicarbonate ( baking soda ) and citric back breaker ( lemon juice ) are combined , they react by forming carbon dioxide gas as well as a chemical chemical compound call Na citrate . It ’s the carbon dioxide that causes all those bubble ( remember CO2 is the gaseous state that score your can of soda or carbonated water water fizz ) . We do it that carbon dioxide is the elemental gas we exhale when breathing . It occurs naturally in Earth ’s atmosphere and is let out by natural sources like geysers ( and vent ) as well as industrial processes .
Sodium citrate is the Na derived from citric acid . It is used in a variety show of everyday item . It is used as an anticoagulant medication for blood products , as well as an sour regulator in food .
