In this experiment, we will try to separate the floating parts of a suspension by spinning.Things Required:HammerNailClear drinking glass1-lb. metal coffee canCotton string2 tablespoonfuls of flour Directions:Use the hammer and nail to make two holes across from each other beneath the top rim of the can. Tie the ends of a two-foot piece of string […]
In this experiment, we will learn the difference between weak solution and concentrated solution.Things Required:Instant teaTeaspoon2 cupsDirections:Fill the cups with water. To one cup add 1/4 teaspoonful of instant tea and stir. To the second cup add 1 heaping teaspoonful of instant tea and stir. Observe the colour of the tea solution in each cup.This
Can you make chicken bones soft and even bend them? Try this experiment and see.Things Required:A large wide-mouth jar1½ cups of vinegarSome clean chicken bones(leg bones work best)Directions:Place the vinegar in the jar and put the clean bones in it. Make certain the bones are completely covered bythe vinegar. Leave the bones to set for
The purpose of this experiment is to observe the separation of colours in ink.Things Required:Green and black water-soluble pensCoffee filterSaucerPaper clipDirections:Fold the coffee filter in half. Fold it in half again. Make a dark green mark about one inch from the rounded edge of the folded filter. Make a second mark with the black marker
Are you hungry after all these experiments? Come on; lets make a quick, tasty cup of soup. Cooking can also teach us science.Things Required:2 bouillon cubes2 cupsHot and cold waterDirections:Fill one cup with cold water from the faucet. Add one bouillon cube. Allow this cup to sit undisturbed while the second cup is prepared. Fill
In this simple but yummy experiment, you will find the fastest way to dissolve a candy.Things Required:3 bite-sized pieces of soft candy.Directions:Place one of the candies in your mouth. DO NOT chew, and DO NOT move your tongue around. Record the time it takes for this candy to dissolve. Place a second candy in your
What happens if you dissolve a solute in a solvent? To find out the answer, do the following experiment.Things Required:Clear drinking glassPowdered fruit drinkFlat toothpick Directions:Fill the glass with water. Select a flavour of powdered fruit drink that has a dark colour such as cherry, grape, raspberry, etc. Use the wide end of a flat
Make your own fire extinguisher with a few materials you can find around your house.Things Required:A large, wide-mouth jar with lid2 cups of water3 tablespoonfuls of baking soda1/2 cup of vinegarA large nailHammerA spoonA small jarDirections:First, on a rock outside or on an old workbench or board, turn the lid of the large jar over,
In this experiment we will observe a phase change due to the addition of water.Things Required:1/3 cup of Plaster of ParisTablespoonPaper cupPlastic spoonDirections:Pour 1/3 cup of Plaster of Paris into the paper cup. Add 3 tablespoonfuls of water and stir with the plastic spoon. Note: Be careful not to put any of the plaster in
Now, let’s try to grow the cubes of salt crystals.Things Required:Saucer1 sheet of dark construction paperScissorsTable saltTablespoonSmall baby food jar with a lid Directions:Fill the jar one-half full with water. Add 1½ tablespoonfuls of table salt to the water. Secure the lid. Shake the jar vigorously for 30 times; then allow it to stand. Cut
Chemists are always working with new chemicals and trying to find out which ones clean best. Some everyday foods found around the kitchen make good cleaners, too, but which ones?Things Required:Piece of white cotton clothMargarine, oil, or butter (To stain cloth) Paper towels1/4 piece of lemon1/4 piece of onionVinegar1/2 cup of whole milkMarking pen Directions:With
Now let’s try something different. How about growing a layer of lacy salt crystals?Things Required:3 tablespoonfuls of table saltCupTall, slender, clear jarBlack construction paperScissors Directions:Pour 1/2 cup of water into the jar. Add the salt and stir. Cut a 1/2-inch strip from the construction paper. The height of the paper should be about one-half the
Here we try to grow needle-shaped crystals of epsom salt.Things Required:Saucer1 sheet of dark construction paperEpsom salt1 small baby food jar with a lidTablespoonScissors Directions:Fill the jar one-half full with water. Add 2 tablespoonfuls of epsom salt to the water. Secure the lid. Shake the jar vigorously for 60 times; then allow it to stand.
Now let’s really challenge agent detergent, using newly soiled strings.Things Required:Jars with water and detergent-water solution from the last experimentMore short stringsSubstances to soil strings:Grease, Oil, Dirt, Jam, Juice, SpoonDirections:Soil the pairs of strings in juice, grease, dirt, oil, ketchup, mustard or whatever you have, and drop one of each pair into each jar or