Chemistry
What is the atomic number of carbon?
6
What is the chemical symbol for gold?
Au
Which gas is the most abundant in Earth's atmosphere?
Nitrogen
What is the pH of a neutral solution?
7
What is the primary component of natural gas?
Methane
Which element is essential for human bone health?
Calcium
What is the chemical formula for water?
H2O
Which gas is known as laughing gas?
Nitrous oxide
What is the lightest element in the periodic table?
Hydrogen
What is the process of converting a solid directly into a gas called?
Sublimation