Make baking soda and vinegar react to create an explosion of colours. Courtesy Kidzapp
Make baking soda and vinegar react to create an explosion of colours. Courtesy Kidzapp
Make baking soda and vinegar react to create an explosion of colours. Courtesy Kidzapp
Make baking soda and vinegar react to create an explosion of colours. Courtesy Kidzapp

Make rainbows and explosions: 6 simple science experiments you can do at home with the children


Katy Gillett
  • English
  • Arabic

Running out of ideas to keep the little ones busy and interested at home? Karim Beidas, the founder of Kidzapp, has a bunch of ideas for fun and simple science experiments you can try together as a family.

Make squishy soap

This can be messy, but fun. All you need are a couple of ingredients that you probably already have lying around the house.

What you’ll need:

1/2 cup corn flour / corn starch 
4 tbsp liquid soap (even washing up liquid will do)
4 tsp cooking oil
Food colouring

How to do it:

  • Use a spoon to mix the corn flour and liquid soap in a medium-sized bowl. Then pour in the cooking oil and stir.
  • Drop a good squirt of food colouring into the mix and stir.
  • Knead the mixture until you've got a lump with somewhat even colouring.
  • Break off a small piece of the lump and use as soap the next time your little ones need to wash their hands.

Watch a demonstration of the experiment here:

Watch a stickman move

This experiment will leave your little ones amazed as they watch their drawings pop off the glass.

What you’ll need:

A glass plate, bowl or picture frame
Dry erase marker
Water

How to do it:

  • Draw a simple picture on the glass. A stick figure is a good one to start with.
  • Slowly pour water on to the plate or into the bowl to lift up the drawing.
  • Swirl the water around to make the picture dance and move.

Watch a demonstration video here:

Watch an explosion of colours

This is a fun and easy baking soda and vinegar experiment that will have your children jumping around in excitement as they witness a splash of colours exploding right before their eyes.

What you’ll need:

Baking soda
Vinegar
Food colouring
Muffin tray (or small see-through cups)
Tray (to limit the mess!)
An empty bottle or a cup to pour the vinegar

How to do it:

  • Insert a few drops of food colouring into each container in the muffin tray. You can mix and match some colours if you want more options.
  • Cover the colours with a teaspoon of baking soda (try to do this part before showing your children, to keep the element of surprise once the colours start popping up).
  • Ask your child to pour some vinegar on the baking soda and watch the excitement on their faces as colours start exploding from the muffin tray.

Watch a demonstration video here:

Make colour-changing milk

Find out what happens when you mix a little milk, food colouring and a drop of dish detergent. You’ll have a budding Jackson Pollock in your home in no time.

What you’ll need:

Milk
Dinner plate
Food colouring (red, yellow, green, blue)
Dishwashing soap
Cotton swabs

How to do it:

  • Pour enough milk on the dinner plate to completely cover the bottom to the depth of about a quarter of an inch. Allow the milk to settle.
  • Add one drop of each of the four colours of food colouring – red, yellow, blue and green – to the milk. Keep the drops close together in the centre of the plate of milk.
  • Find a clean cotton swab for the next part of the experiment. Touch the tip of the cotton swab to the centre of the milk. It's important not to stir the mix; just touch it with the tip of the cotton swab.
  • Now place a drop of liquid dishwashing soap on the other end of the cotton swab. Place the soapy end of the swab back in the middle of the milk and hold it there for 10 to 15 seconds. Look at that burst of colour.
  • Add another drop of soap to the tip of the swab and try it again. Experiment with placing the cotton swab at different places in the milk. Notice that the colours in the milk continue to move even when the swab is removed.

Watch a demonstration video here:

Storm in a cup

Brew up a storm inside your house. You only need ingredients you will already have at home to get started.
What you'll need:

Shaving cream
A large glass
Water
Food colouring
A spoon

How to do it

  • Fill the glass half full with water.
  • Spray some shaving cream on top of the water to fill the glass to three quarters full.
  • Use your finger or a spoon to spread the shaving cream evenly over the top of the water. The top of the shaving cream should be flat.
  • Mix half a cup of water with 10 drops of food colouring in a separate container. Gently add the coloured water, spoonful by spoonful, to the top of the shaving cream. When it gets too heavy, watch it storm!

Watch a demonstration video here:

Create a rainbow in a glass

This one will have your children mesmerised by the colours.

What you’ll need:

Skittles
Water
A mug
5 separate cups
A tablespoon
A clear glass
A dropper or pipette

How to do it:

  • Separate the Skittles into the cups, in these amounts: two red, four orange, six yellow, eight green, and 10 purple.
  • Heat a mug of water in the microwave for long enough that the water is hot, but not boiling. Be careful removing the water from the microwave – it's hot!
  • Measure and pour two tablespoons of hot water into each cup, on top of the Skittles.
  • Stir each cup carefully so no water splashes out. The cups need to be cool for the next part of the experiment, so leave them somewhere where they won't get knocked over. Stir them every 10 minutes or so until the Skittles are dissolved and the water is room temperature.
  • Using the dropper, add the coloured water from the five cups to the clear glass. Start with purple, then add green, then yellow, orange, and red last. Go slowly here, we don't want the different layers to mix.
  • Congratulations, you made a rainbow – and you didn't even have to go outside!
Use Skittles to create a rainbow in a glass. Courtesy Kidzapp
Use Skittles to create a rainbow in a glass. Courtesy Kidzapp

Manchester City 4
Otamendi (52) Sterling (59) Stones (67) Brahim Diaz (81)

Real Madrid 1
Oscar (90)

The years Ramadan fell in May

1987

1954

1921

1888

Retirement funds heavily invested in equities at a risky time

Pension funds in growing economies in Asia, Latin America and the Middle East have a sharply higher percentage of assets parked in stocks, just at a time when trade tensions threaten to derail markets.

Retirement money managers in 14 geographies now allocate 40 per cent of their assets to equities, an 8 percentage-point climb over the past five years, according to a Mercer survey released last week that canvassed government, corporate and mandatory pension funds with almost $5 trillion in assets under management. That compares with about 25 per cent for pension funds in Europe.

The escalating trade spat between the US and China has heightened fears that stocks are ripe for a downturn. With tensions mounting and outcomes driven more by politics than economics, the S&P 500 Index will be on course for a “full-scale bear market” without Federal Reserve interest-rate cuts, Citigroup’s global macro strategy team said earlier this week.

The increased allocation to equities by growth-market pension funds has come at the expense of fixed-income investments, which declined 11 percentage points over the five years, according to the survey.

Hong Kong funds have the highest exposure to equities at 66 per cent, although that’s been relatively stable over the period. Japan’s equity allocation jumped 13 percentage points while South Korea’s increased 8 percentage points.

The money managers are also directing a higher portion of their funds to assets outside of their home countries. On average, foreign stocks now account for 49 per cent of respondents’ equity investments, 4 percentage points higher than five years ago, while foreign fixed-income exposure climbed 7 percentage points to 23 per cent. Funds in Japan, South Korea, Malaysia and Taiwan are among those seeking greater diversification in stocks and fixed income.

• Bloomberg

Breast cancer in men: the facts

1) Breast cancer is men is rare but can develop rapidly. It usually occurs in those over the ages of 60, but can occasionally affect younger men.

2) Symptoms can include a lump, discharge, swollen glands or a rash. 

3) People with a history of cancer in the family can be more susceptible. 

4) Treatments include surgery and chemotherapy but early diagnosis is the key. 

5) Anyone concerned is urged to contact their doctor

 

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