146 questions and answers in this section

Natural Sciences » Chemistry

Explain why does cream turn into whipped cream when it is whipped?

Explain why does cream turn into whipped cream when it is whipped?

When cream is whipped, the agitation generates mechanical forces that mix the molecules of fat and water. These forces lead to the incorporation of air...

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Explain why do ice cubes make drinks colder?

Explain why do ice cubes make drinks colder?

When ice cubes are added to a room temperature drink, they will absorb heat from the drink in order to reach their own melting temperature...

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Explain why some types of glass are more resistant to scratches than others.

Explain why some types of glass are more resistant to scratches than others.

Glass resists scratches thanks to its chemical composition. The main ingredients: silica (sand), sodium oxide (soda), and calcium oxide (lime). More resistant glasses, like those...

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Explain why does flint generate a spark when struck against metal?

Explain why does flint generate a spark when struck against metal?

Flint is a siliceous rock primarily composed of quartz. It is one of the forms of silica (SiO2), and it is created by the fossilization...

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Explain why some liquids can change color with temperature changes?

Explain why some liquids can change color with temperature changes?

The thermochromic effect occurs when certain materials change color in response to a temperature variation. It's like the magic of cups that change color when...

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Explain why do some crystals change color when exposed to light?

Explain why do some crystals change color when exposed to light?

When a crystal changes color due to light, it is often because of the way the atoms inside absorb and emit that light. The atoms...

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