Best science experiments

1#Colourful flowers experiment

What you need

  • White flowers
  • Water
  • Food colouring
  • Small Vases

Cut a single flower with a fairly short stem. A shorter stem will get you a quicker result as the colour has to travel all the way up the stem to get to the petals. Cut the stem on an angle to give a greater surface area for the coloured water to enter by.

Now place the flower in a small, short vase or glass (a shot glass works well) and add a generous amount of food colouring.

Keep an eye on it, in about 30 minutes some colour will start to show in the petals. If you want to be really fancy, take a time-lapse video on your phone to see the changes happening quickly.


You will need

  • 1 balloon (round ones will work, but the longer “airship” balloons work best)
  • 1 long piece of kite string (about 10-15 feet long)
  • 1 plastic straw
  • tape

Balloon rocket exp

What to do

  1. Tie one end of the string to a chair, doorknob, or other support.
  2. Put the other end of the string through the straw.
  3. Pull the string tight and tie it to another support in the room.
  4. Blow up the balloon (but don’t tie it. Pinch the end of the balloon and tape the balloon to the straw as shown above. You’re ready for launch.
  5. Let go and watch the rocket fly


You will need

  • One small empty plastic soda or water bottle
  • 1/2 cup of vinegar
  • Small balloon
  • Baking soda
  • Funnel or piece of paper

fizz inflator exp

What to do

  1. Carefully pour the vinegar into the bottle.
  2. This is the tricky part: Loosen up the balloon by stretching it a few times and then use the funnel to fill it a bit more than halfway with baking soda. If you don’t have a funnel you can make one using the paper and some tape.
  3. Now carefully put the neck of the balloon all the way over the neck of the bottle without letting any baking soda into the bottle.
  4. Ready? Lift the balloon up so that the baking soda falls from the balloon into the bottle and mixes with the vinegar. Watch the fizz-inflator at work!


You will need

  • A clean 16-ounce plastic soda bottle
  • 1/2 cup 20-volume hydrogen peroxide liquid (20-volume is a 6% solution, ask an adult to get this from a beauty supply store or hair salon)
  • 1 Tablespoon (one packet) of dry yeast
  • 3 Tablespoons of warm water
  • Liquid dishwashing soap
  • Food colouring
  • Small cup
  • Safety goggles


What to do

  1. Hydrogen peroxide can irritate skin and eyes, so put on those safety goggles and ask an adult to carefully pour the hydrogen peroxide into the bottle.
  2. Add 8 drops of your favourite food colouring into the bottle.
  3. Add about 1 tablespoon of liquid dish soap into the bottle and swish the bottle around a bit to mix it.
  4. In a separate small cup, combine the warm water and the yeast together and mix for about 30 seconds.
  5. Now the adventure starts! Pour the yeast water mixture into the bottle (a funnel helps here) and watch the foaminess begin!

5#The Exploding Lunch Bag

You will need

  • One small (sandwich size) zip-lock bag – freezer bags work best.
  • Baking soda
  • Warm water
  • Vinegar
  • Measuring cup
  • A tissue


What to do:

  1. Go outside – or at least do this in the kitchen sink.
  2. Put 1/4 cup of pretty warm water into the bag.
  3. Add 1/2 cup of vinegar to the water in the bag.
  4. Put 3 teaspoons of baking soda into the middle of the tissue
  5. Wrap the baking soda up in the tissue by folding the tissue around it.
  6. You will have to work fast now – partially zip the bag closed but leave enough space to add the baking soda packet. Put the tissue with the baking soda into the bag and quickly zip the bag completely closed.
  7. Put the bag in the sink or down on the ground (outside) and step back. The bag will start to expand, and expand, and if all goes well…POP!


You will need

  • A large iron nail (about 3 inches)
  • About 3 feet of THIN COATED copper wire
  • A fresh D size battery
  • Some paper clips or other small magnetic objects


What to do

  1. Leave about 8 inches of wire to lose at one end and wrap most of the rest of the wire around the nail. Try not to overlap the wires.
  2. 7Cut the wire (if needed) so that there is about another 8 inches loose at the other end too.
  3. Now remove about an inch of the plastic coating from both ends of the wire and attach the one wire to one end of a battery and the other wire to the other end of the battery. See the picture below. (It is best to tape the wires to the battery – be careful though, the wire could get very hot!)
  4. Now you have an ELECTROMAGNET! Put the point of the nail near a few paper clips and it should pick them up!

7#A Color Symphony

You will need

  • A flat tray (like a cookie baking tray)
  • Food colouring (at least 3 different colours)
  • Whole milk – low-fat milk will not work for this experiment
  • Liquid soap used for washing dishes

Plate 1 exp

What to do

Carefully pour the milk into the tray so that it just covers the bottom

Add about 6-8 drops of different coloured food colouring onto the milk in different spots

Add about 5 drops of the liquid soap onto the drops of food colouring and watch the show!

To clean up, simply pour the coloured milk down the drain. (don’t drink it!)


You will need

  •  An empty soda can
  •  blown-up balloon
  •  Ahead of hair


What to do

  1. Place the can on its side on a flat smooth surface like a table or a smooth floor.
  2. Rub the blown up balloon back and forth through your hair really fast.
  3. Now the fun part – Hold the balloon close to the can without actually touching the can. The can will start to roll towards the balloon without you even touching it!

Try This Too: While you’ve got the balloon out, tear up part of tissue into tiny pieces about 1/4 inch (.5 cm) big. Rub the balloon in your hair again and bring it close to the tissue pieces. They will be attracted to the balloon and then jump away.


You will need

  • 1 inch (2.5 cm) wide PVC Pipe about 24 inches (60cm) long. You can also use a regular balloon if you do not have PVC pipe.
  • Mylar tinsel for Christmas trees. There are many types of tinsel and many will not work – you should look for the thinnest and narrowest possible. The tinsel used in the video is about 1 millimetre wide. If it is much wider than that, the orb may be too heavy to levitate. 
  • A head of clean, dry hair
  • Scissors


What to do

  1. Arrange 6 strands of mylar together and tie them together in a knot at one end.
  2. Tie them together again about 6 inches (15cm) from the first knot.
  3. Cut the loose mylar strands off just past each knot.
  4. Charge the PVC pipe by rubbing it back and forth through your hair for 10 seconds.
  5. Hold the mylar orb (by the knot) above the charged pipe and let it drop and touch the pipe.
  6. It should repel away and start floating. If the tinsel keeps sticking to the pipe, the tinsel is probably not thin enough and you will need to try another kind of tinsel or order some from us. (You will usually have to “recharge” the pipe before each levitation.)


You will need

  • A wooden skewer (you can also use a clean wooden chopstick)
  • A clothespin
  • 1 cup of water
  • 2-3 cups of sugar
  • A tall narrow glass or jar


What to do

Clip the wooden skewer into the clothespin so that it hangs down inside the glass and is about 1 inch (2.5 cm) from the bottom of the glass. (as shown)

Remove the skewer and clothespin and put them aside for now.

  • Get a helpful adult!
  • Pour the water into a pan and bring it to boil.
  • Pour about 1/4 cup of sugar into the boiling water, stirring until it dissolves.
  • Keep adding more and more sugar, each time stirring it until it dissolves until no more will dissolve. This will take time and patience and it will take longer for the sugar to dissolve each time. Be sure you don’t give up too soon. Once no more sugar will dissolve, remove it from heat and allow it to cool for at least 20 minutes.
    NOTE: While it is cooling, some people like to dip half of the skewer in the sugar solution and then roll it in some sugar to help jump-start the crystal growth. If you do this, be sure to let the skewer cool completely so that sugar crystals do not fall off when you place it back in the glass.
  • Have your friendly ADULT carefully pour the sugar solution into the jar almost to the top. Then submerge the skewer back into the glass making sure that it is hanging straight down the middle without touching the sides.
  • Allow the jar to fully cool and put it someplace where it will not be disturbed.
  • Now just wait. The sugar crystals will grow over the next 3-7 days.


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