An element blank is its row of the periodic table

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures

Apropane torch is lit inside a hot air balloon during preflight preparations to inflate the balloon. which condition of the gas remains constant