quiz on chemistry bar
This is a timed quiz. You will be given 15 seconds per question. Are you ready?
15
What type of bond is formed when electrons are shared between atoms?
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What is the pH of pure water at 25°C?
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Which gas is released during photosynthesis?
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What is the atomic number of Carbon?
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Wrong!
Which element is most abundant in the Earth's crust?
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Which of the following is an alkali metal?
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Wrong!
Which subatomic particle has a negative charge?
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Wrong!
What is the chemical formula for sulfuric acid?
Correct!
Wrong!
quiz on chemistry bar
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