Celebrate Halloween through chemistry

Celebrate Halloween through chemistry

9:52 AM, 31st October 2012
Celebrate Halloween through chemistry

SINGAPORE: Halloween, the yearly celebration observed in a number of countries on 31 October, is the eve of the Western Christian feast of All Hallows (or Saints). Typical festive Halloween activities include trick-or-treating, attending costume parties, carving pumpkins into jack-o’-lanterns, lighting bonfires, apple bobbing, visiting haunted attractions, playing pranks, telling scary stories, and watching horror films. A little chemistry can add a lot of ghastly, ghostly effect to the Halloween celebration. Here are some top Halloween projects that apply command of chemistry.

Realistic fake blood

Realistic fake blood can be obtained by mixing 4-6 drops red of food colouring to 1/4 cup of white corn syrup. This yields a bright red blood. The corn syrup is sticky and the red food colouring will stain.

fake blood.

Fake flesh

Common kitchen ingredients can be used to make non-toxic fake flesh or organs for Halloween party. Mix together the corn starch, food colouring and water. After a smooth consistency is achieved, mix in the cocoa powder. Using fingers press the mixture against the side of a bowl to form organ shapes.

fake flesh.

Eyeball Cake

Bake and decorate a creepy eyeball cake for Halloween, birthday or fun science parties. Select favourite cake mix. White cake matches the frosting, but red food colouring make a bloody eyeball. Spray a glass or metal 2-qt mixing bowl with nonstick cooking spray. Sprinkle the pan with flour. Bake the cake. Frost the entire cake with white frosting. Draw an eye using blue or red frosting. A glass to imprint a circle shape in the white frosting. Fill in the pupil of the eye with black frosting or use a circle made from construction paper. Use red gel frosting to trace blood vessels in the white of the eye.

Eyeball cake.


Glow in the dark pumpkin

A glow in the dark pumpkin with a jack-o-lantern face can be made using a common non-toxic chemical. Coat a pumpkin with glow in the dark paint. The glow in the dark paint can be obtained from any arts and crafts store. Use glow in the dark acrylic paint for making models, glowing tempera paint, or glow in the dark fabric paint. Shine a bright light on the pumpkin, then turn out the lights. If the pumpkin does not glow as brightly as you would like, apply one or more coats of glow in the dark paint. Tape a face on the pumpkin, paint the entire pumpkin, and remove the tape when the paint is dry.

glow in the dark pumpkin.

Glowing hand of doom punch

Glowing hand of doom punch is a great punch for Halloween parties or mad scientist parties. Rinse the glove with water. Fill the glove with tonic water. Hang it in the freezer to freeze. When the tonic water is frozen in the glove, set the glove in a large glass bowl or punch bowl. It isn’t necessary to remove the hand from the glove. Red food colouring on the hand can be used to make it appear bloody.

Glowing hand of doom punch.

© About.Com Chemistry - Anne Marie Helmenstine 



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