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599 R 894 C Why Does Cola Have a Fizzy Taste?
Cola and other fizzy drinks taste sharp and bubbly because they contain carbon dioxide gas (CO₂). This gas is dissolved in water under high pressure, creating carbonated water.
When you open a bottle of cola, the pressure is released, and tiny gas bubbles start to form. These bubbles rise to th...
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592 R 880 C How Does an Eraser Remove Pencil Marks?
When you write with a pencil, the tip leaves graphite particles on the paper. These particles stick to the rough surface of the paper, creating visible marks.
An eraser works by grabbing and lifting the graphite off the paper. Erasers are made of a soft and sticky material, usually rubber or plas...
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601 R 898 C Why Does Steam Rise from Hot Food?
When food is hot, you can see steam rising from it. This happens because heat changes the water inside the food into a gas, which then spreads into the air.
Food contains moisture, or tiny water particles. When the food is heated, these water particles gain energy and turn into water vapor. This ...
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609 R 915 C Why Is the Ocean Blue?
Water has no color, but the ocean looks blue because it reflects the blue light from the sun. This happens because of the way light moves through water.
Sunlight is made up of many colors, including red, orange, yellow, green, and blue. When light enters the ocean, water absorbs the warmer colors...
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