149 questions and answers in this section

Natural Sciences » Chemistry

Explain why candies that change color also change their taste?

Explain why candies that change color also change their taste?

The food colorings used in candies can cause minimal but real chemical reactions, particularly by interacting with other ingredients such as food acids, saliva, or...

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Explain why was Socrates sentenced to death by ingesting poison?

Explain why was Socrates sentenced to death by ingesting poison?

At the time when Socrates was wandering the streets of Athens, the city had just gone through the Peloponnesian War, a mega confrontation against Sparta. Athens had...

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Explain why Marie Curie chose to study radioactivity?

Explain why Marie Curie chose to study radioactivity?

Marie Curie grew up in a Poland occupied by the Russian Empire, with significant restrictions placed on education, particularly for women. From a young age, she developed...

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Explain why food cooks when heated.

Explain why food cooks when heated.

When you heat a food, its molecules start to move and vibrate faster and faster. This intense agitation breaks some bonds, allowing the molecules to...

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Explain why is graphene so strong and lightweight?

Explain why is graphene so strong and lightweight?

Graphene is simply a single layer of carbon atoms arranged in a honeycomb shape, highly regular and completely flat. Imagine a sheet so thin that...

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Explain why air bubbles form in boiling water.

Explain why air bubbles form in boiling water.

When you heat water in a saucepan, initially, the heat transfers from the bottom to the top of the container. This thermal energy increases the...

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Explain why water is transparent while ice is opaque?

Explain why water is transparent while ice is opaque?

In liquid water, H₂O molecules move freely and constantly, forming and breaking bonds rapidly in a permanent disorder. This agitation and chaotic movement easily allow...

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Explain why water is a universal solvent.

Explain why water is a universal solvent.

Water is a small, simple molecule but quite special. Composed of one oxygen atom and two hydrogen atoms (that's why it's called H₂O), it has...

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Can you explain why copper changes color over time?

Can you explain why copper changes color over time?

Copper is a metal that, when left exposed to ambient air, gradually begins to change color. Why? Because it naturally reacts with the oxygen present...

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Explain why ancient Chinese used gunpowder for fireworks?

Explain why ancient Chinese used gunpowder for fireworks?

Gunpowder was discovered in China around the 9th century, by chance, by alchemists primarily searching for a potion of immortality. They unintentionally mixed saltpeter, sulfur, and charcoal,...

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