6 Questions
Which of the following is a noble gas?
Helium
What is the atomic number of carbon?
6
What is the chemical symbol for sodium?
Na
What is the chemical formula for water?
H2O
Which element is the most abundant in the Earth's crust?
Oxygen
What is the pH value of a neutral solution?
7
Study Notes
Elements
- Noble gases include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
- Carbon has an atomic number of 6.
- The chemical symbol for sodium is Na.
- The chemical symbol for tungsten is W, and it is the heaviest element with a stable isotope.
Compounds
- The chemical formula for water is H₂O.
Earth's Crust
- Oxygen is the most abundant element in the Earth's crust, making up about 46% of its mass.
Acids and Bases
- A neutral solution has a pH value of 7.
Test your knowledge of chemistry with this quiz on Class 10 Chemistry Chapter 1. Answer questions about the atomic number of carbon, noble gases, and the chemical symbol for sodium. See how well you know the basics of chemistry!
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