Magnesium nitrate, magnesium hydroxide and magnesium carbonate all decompose when heated. Which statement about these decomposition reactions is correct?
A. Magnesium carbonate decomposes to release carbon dioxide and oxygen
B. Magnesium hydroxide decomposes to release hydrogen and oxygen
C. Magnesium hydroxide decomposes to release water vapour
D. Magnesium nitrate decomposes to release oxygen only

Particles vibrate in a rigid structure and do not move relative to their neighbors.

The diagram below shows the movement of particles. what does this piece of evidence best support? the collision theory the maxwell-boltzmann distribution the effect of pressure on reaction rates the effect of temperature on reaction rates

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.