Which of these parts of the atom is directly involved in chemical changes?

A. electron

B. nucleus

C. neutron

D. proton

What is one common reaction to all hydrocarbons?

Cells that identify pathogens and distinguish one from another are called

An atom of a certain element has 36 protons, 36 electrons, and mass of 84. what is the mass of the atom?

when hydrochloric acid is dripped onto marble, bubbling is observed while dripping hydrochloric acid onto granite does not lead to bubbling. Based on these observations, what compound may be a component of marble but not granite?

Which series lists the hierarchy of life from largest to smallest?

If 1.0 gram of matter was converted to energy, how much energy would be formed? A. 9.0 x 10-13 joules B. 9.0 x 1013 joules C. 3.0 x 1013 joules D. 3.0 x 108 joules

A piece of metal ore weighs 8.50 g. when a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 ml to 26.47 ml. what is the density of the ore?

Find the mass of 3.65 x 10^-2 mol K2SO4

What two factors determine the thermal energy in a substance

What is the name of the hybrid orbitals used by chlorine in clf3?