Which of the following is a noble gas?

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

Which of the following is a type of cloud that often forms a dark, towering structure and is associated with thunderstorms?

What is the primary function of the cell membrane?

What type of celestial object is a rapidly rotating neutron star that emits beams of radiation, observed as periodic pulses?

What is the term for the point in a planet's orbit where it is farthest from the Sun?

What is the term for a type of galaxy that does not have a distinct shape, containing a mix of old and young stars?

In a chemical reaction, what is the term for substances on the left side of the arrow?

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

Which moon of Neptune is the coldest known object in our solar system, with surface temperatures close to absolute zero?