149 questions and answers in this section

Natural Sciences » Chemistry

Explain why a chain reaction occurs when you light a match?

Explain why a chain reaction occurs when you light a match?

The red or brown tip of the match often contains potassium chlorate, a compound that readily releases a lot of oxygen when heated. Next to...

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Can you explain why iron rusts more quickly in a marine environment than in a terrestrial environment?

Can you explain why iron rusts more quickly in a marine environment than in a terrestrial environment?

The marine environment is rich in salt, primarily sodium chloride (the famous table salt!), but also in various dissolved mineral ions, such as sulfate, calcium, or magnesium...

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Explain why fizzy candies sizzle in the mouth?

Explain why fizzy candies sizzle in the mouth?

The secret behind fizzy candies is simply carbon dioxide (CO₂), exactly the same gas found in sparkling water or sodas. This gas is trapped under...

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Explain why baking soda can help extinguish a kitchen fire?

Explain why baking soda can help extinguish a kitchen fire?

Baking soda, chemically known as sodium bicarbonate, is a naturally alkaline white powder, meaning it easily neutralizes acids. When heated, it rapidly decomposes, releasing carbon...

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Can you explain why jellyfish have such a unique shape?

Can you explain why jellyfish have such a unique shape?

The shape of a bell or umbrella in jellyfish is not just for aesthetics; it provides a significant advantage for their movement in water. Their...

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Explain why crumpled paper becomes stronger after being hot-pressed.

Explain why crumpled paper becomes stronger after being hot-pressed.

When you crumple paper, the cellulose fibers it contains get tangled and disorganized. When you then smooth this paper with heat, these heated fibers regain...

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Explain why soap bubbles have shimmering colors?

Explain why soap bubbles have shimmering colors?

This super cool phenomenon comes from white light reflecting off both surfaces of the thin layer of soapy water and creating what is called light...

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Explain why ice melts when left outside?

Explain why ice melts when left outside?

The higher the outside temperature, the more energy the ice molecules receive. These molecules start to vibrate faster until they have enough energy to leave...

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Explain why jelly bubbles tremble when touched.

Explain why jelly bubbles tremble when touched.

A jelly bubble is primarily composed of water, trapped in a gelatinous network formed by long chains called polymers. These polymers are often derived from...

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Explain why Marie Curie used lead blocks as stationery?

Explain why Marie Curie used lead blocks as stationery?

Lead is an ideal metal for blocking radiation. Why? Because it has a high density, which acts as a very effective barrier to stop gamma...

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