The Chemistry Challenge: 20 Questions on Elements and Compounds
Question 1
What is the most abundant element in the Earth’s crust?
- A) Oxygen
- B) Silicon
- C) Aluminum
Question 2
Which element has the highest melting point?
- A) Tungsten
- B) Carbon
- C) Iron
Question 3
What is the chemical formula for table salt?
- A) NaCl
- B) KCl
- C) LiCl
