The Magic of Science

Over lockdown, Room 6 investigated fun science experiments using everyday ingredients most children had at home.  

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Science is a way of investigating, understanding, and explaining our natural and physical world.  It involves carrying out investigations, testing ideas, making observations and then gathering the evidence.  

Using everyday objects from home, the children were able to carry out some fun experiments, observing and reflecting on how the different materials were put together, and how these materials reacted under different conditions. 

Experiment 1:  Magic Milk

Using normal milk with a few drops of food colouring on top, the children dipped a cotton bud into some dishwashing liquid and then carefully put the cotton bud into the milk and watched as the food colouring moved and danced around the dish. The children observed the colours mixing together and forming patterns in the milk.

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We moved the cotton bud in the milk and when we got closer to the green colour it kept moving away from us.

Mitchell

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The colours were separating from the milk and the soap.

Cooper M

How did it happen?

Milk is made up of minerals, proteins, and fats. Proteins and fats are susceptible to changes. When the dish soap is added to the milk, those molecules run around and try to attach to the fat molecules in the milk

Experiment 2:  Erupting vinegar, dishwashing liquid and baking soda

This was a fantastic experiment the children enjoyed because it was fun and the results happened quickly.

The children put baking soda at the bottom of a jar or container. In a jug, they mixed vinegar, dishwashing liquid and some food colouring together and then poured it over the baking soda. The erupting foam was instant and very exciting.

Video 4  here

Video 5 here

How did it happen?

A chemical reaction between the vinegar and baking soda creates a gas called carbon dioxide. Carbon dioxide is the same type of gas used to make the carbonation in sodas. This gas causes it to spread out, leaving through the opening very quickly, causing an eruption!

Experiment 3:  Rainbow Bubble Snake 

This experiment used items that could be recycled.  A plastic bottle with the round bottom cut off, a rubber band and an old sock or cloth.  The cloth or sock was placed around the cut opening of the plastic bottle and the rubber band was wrapped around it to keep it in place.  You dropped food colouring onto the cloth or sock end and then dipped it into a solution of dishwash liquid soap.  Then you blow through the plastic bottle and colourful rainbow coloured bubbles stream out, looking like a snake.

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That was really cool.  I had to keep blowing to get lots of bubbles out.

Michaela

Video 7 here

How did it happen?

When you blow air through your Bubble Snake, the air is forced through the fabric and bubbles are continuously being made.  The bubbles attach to each other when they come out of the fabric due to the hydrogen bonds that make bubbles possible.

Experiment 4:  Shaving Cream Marbling

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Although this was a fun, yet messy experiment, the results at the end on the paper were impressive.  Once the shaving cream was sprayed onto a flat tray or plate, the children added drops of different food colouring on top. They gently swirled the food colouring drops with a toothpick or a pointy item from the kitchen to swirl a pattern.  They then placed a piece of paper on top and carefully pushed it into the shaving cream.  

When they had pulled the paper off the shaving cream, they then scraped the remaining cream off with a ruler and they saw beautiful marbling patterns left on the paper from the food colouring.

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How did it happen?

The coloured patterns in the shaving cream are transferred onto the paper.  The shaving cream dries like a coloured, foamy rubber on the page.  The best part is afterwards when the children can play in the shaving cream which is great for sensory activities.

Keywords:  experiment, chemical reaction, observation, investigating, understanding, explaining.

Science:  

Investigating in science

Ask questions, find evidence, explore simple models, and carry out appropriate investigations to develop simple explanations.  

Properties and changes of matter

Group materials in different ways, based on the observations and measurements of the characteristic chemical and physical properties of a range of different materials.

Compare chemical and physical changes.

Mathematics:

Probability:

Investigate simple situations that involve elements of chance, recognising equal and different likelihoods and acknowledging uncertainty.  

Technological products:

Understand that there is a relationship between a material used and its performance properties in a technological product.

Visual Art:

Developing Practical knowledge

Explore some art-making conventions, applying knowledge of elements and selected principles through the use of materials and processes.

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