This substance can be either homogeneous or heterogeneous. element
compound
mixture
pure substance

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?