How can you make rock-shaped candy at home?

What you need:

A clean wooden stick, Water, Sugar, A clothespin, A tall, narrow glass jar, A pan, Food colour (optional), Paper towel

What to do:

Heat water in a pan. Bring it to a boil. Ask help from an adult for doing this. Keep adding in sugar to the boiling water one spoon at a time. Wait for one batch to dissolve before you add the next spoon. There will come a time when no more sugar can dissolve into the water. Stop adding the sugar then and allow the water to cool down.

Dip the wooden stick into the sugar solution and then roll it in some sugar (on a plate). Let it dry completely.

If you want, add food colour into the solution, the darker the better.

Pour the sugar water into the glass jar filling it almost to the top.

Clip the stick to the clothespin. Let the pin rest on the mouth of the jar as the stick is submerged into the sugar water. It should hang straight without touching the sides of the jar. Leave the jar undisturbed for a week. You can keep monitoring it though. Cover the top with a paper towel to keep dirt out.

What happens?

Sugar crystals start to grow on the stick. By the end of a week, you have candy on a stick! Why? You made a super saturated' solution when you mixed sugar into the water until it could hold no more. Heating the water added to its capacity of letting sugar dissolve. But once the water cooled, it could not hold that much sugar. So it started forming crystals again. More crystals form as the water evaporates.

The reason these crystals form on the stick is because the stick already had some sugar crystals on it which acted as 'grabbing points for the other crystals.

Picture Credit : Google

How can you fix one matchstick in the air using another?

What you need:

An empty matchbox and matchsticks

What to do:

Poke the rear end of one of the matchsticks through the front of the empty matchbox to make it stand erect Make the second matchstick lean against the first one so that their tips are touching. Use a third match to set fire to the middle of the second one.

What happens?

From the centre of the second matchstick, the fire spreads upwards to its tip as well as downwards. As the tip of the first match catches fire, the second one starts to rise up. Blow out the flame and the second match stays suspended in mid-air!

Why?

The trick is to set fire to the centre of the second matchstick. When the flame starts spreading, it burns up most of the matchstick's weight, making it lighter.

When the flame reaches the tip of the leaning match and the erect match, both catch fire simultaneously and get fused together by the heat.

This fusion allows the erect stick to hold the almost minimal weight of the leaning one. That's how we get the levitating matchstick.

Picture Credit : Google

Have you ever seen a boat powered by soap? No? Now you can make one!

What you need:

Thick, smooth card paper or cardboard, a tub, water, liquid dishwashing soap and a toothpick.

What to do:

1. To make your boat, cut the card into the shape of a rectangle. Then diagonally trim off the upper corners to make a triangular head. To make the rear end, cut out a small triangle inside like the one shown in the figure:

2. Fill the tub with water.

3. Dip the toothpick into the liquid soap. Use the toothpick to delicately coat the sides of the rear triangle with the soap.

4. Now place the boat in the water.

What happens?

Once the boat touches the water, it shoots across the water for a few seconds.

Why?

The answer lies in surface tension.

Surface tension is the force that keeps the molecules of a liquid bound to each other at the surface of the liquid. This makes the top of a liquid act like an elastic sheet, one you need to push through if you want to go deeper into it. Try dipping your finger into water and you'll understand. Soap is a surfactant. A surfactant is a substance which can reduce the surface tension of a liquid. By that it means, that it can loosen the bond between the molecules at the surface of the liquid. That's exactly what the soap does.

Once the boat is put into the water, the soap on its rear end starts separating the surface molecules and reducing the surface tension. However, there is no soap on the front part of the boat. Which means a sort of difference is created in the surface tension between the front and back zones. The higher surface tension zone pulls the boat towards itself and the boat shoots forward! Once the soap spreads through the water, the surface tension equals out and the boat stops moving. To make it shoot forward again, you'll need a tub of fresh water.

Picture Credit : Google

How can you make some fake snot?

What you need:

Gelatin (available at any general store), Corn flour (source from the kitchen or from a general store), water, light green food colour or poster colour (food colour makes the snot edible!), a pan, a fork, a cup to measure everything

What to do:

Pour half a cup of water in the pan. Bring it to a boil. Then remove it from over the heat.

Add three teaspoons of gelatin to the water. Add in a few drops of green colour.

Let the mixture sit for a minute so it softens up. Stir it with a fork then. Add in a quarter cup of com flour. Keep stirring the mixture with a fork.

What happens?

Using the fork, start ‘lifting’ the mixture. There should be strands formed as the mixture cools.

If the strands thicken too much as they cool, add some water to the mixture, a little at a time. If it's too thin, add more com flour.

Why?

Real mucus is made of sugars and protein. Both are polymers. A polymer is a large molecule made of repeating blocks of smaller molecules. That long, sticky, stretchy texture of mucus comes from its polymer composition.

For making fake snot, we use gelatin which is a protein and com starch which is sugar. When they are added to warm water, they link together to form a polymer, which makes it feel like the real thing.

Picture Credit : Google

How to make muffin pizza?

This recipe shows how to make enough pizza for you and a friend!

You Will Need:

  • 1 muffin, sliced in two halves
  • 100 grams tomato sauce
  • pizza toppings, such as green peppers, mushrooms, onions
  • 56 grams mozzarella cheese, shredded

What To Do:

1. Ask an adult to help you preheat the oven to 200°C.

2. Wash your hands.

3. Place the muffin halves on a baking sheet. Spread tomato sauce on top of the muffins.

4. Layer your favourite toppings on top of the sauce.

5. Sprinkle cheese over the toppings.

6. Ask an adult to help you bake the pizza for five minutes, or until the cheese melts.

Picture Credit : Google