Which of the following is a halogen?

What is the term for the point on the Earth's surface directly above the earthquake's origin, where seismic waves are first felt?

What is the chemical symbol for iron?

What is the chemical symbol for potassium?

What is the name for the process by which water from the surface of the Earth enters the atmosphere as water vapor?

Which of the following is a type of landform formed by the erosion of sedimentary rock layers, often resulting in steep cliffs and valleys?

Which type of reaction involves the combination of two or more substances to form a new substance?

Which type of rock is formed from the alteration of existing rock through heat, pressure, or mineral changes without melting?

Which of the following is a fossil fuel formed from the remains of ancient marine organisms?

What is the common name for the compound H2O2?