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Questions and Answers
What is the chemical symbol for hydrogen?
What is the chemical symbol for hydrogen?
- Hg
- H (correct)
- He
- Hy
At standard conditions, in what form is hydrogen?
At standard conditions, in what form is hydrogen?
- Solid
- Liquid
- Plasma
- Gas (correct)
What is the most abundant chemical substance in the universe?
What is the most abundant chemical substance in the universe?
- Carbon
- Oxygen
- Hydrogen (correct)
- Nitrogen
How many protons does the most common isotope of hydrogen have?
How many protons does the most common isotope of hydrogen have?
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When did the formation of protons, the nuclei of hydrogen, occur in the early universe?
When did the formation of protons, the nuclei of hydrogen, occur in the early universe?
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