According to the modern model of the atom, the nucleus of an atom is surrounded by one or more*

Which particle has a mass of approximately 1 atomic mass unit?*

A specific amount of energy is emitted when excited electrons in an atom in a sample of an element return to the ground state. This emitted energy can be used to determine the*

According to the wave-mechanical model, an orbital is defined as the*

All phosphorus atoms have the same*

At STP, which element is a good conductor of electricity?*

Which phrase describes the molecular structure and properties of two solid forms of carbon, diamond and graphite?*

Which quantity is equal to one mole of Au?*

Given the balanced equation representing the reaction between methane and oxygen:

CH₄ + 2O₂ → CO₂ + 2H₂O

According to this equation, what is the mole ratio of oxygen to methane?*

(1)

(2)

(3)

(4)

Which list includes three types of chemical reactions?*

Which compound has the greatest percent composition by mass of sulfur?*

Two molecules of HBr collide and then form H₂ and Br₂. During the collision, the bonds in the HBr molecules are*

Which atom in the ground state has a stable electron configuration?*

Which statement describes a multiple covalent bond?*

The electronegativity difference between the atoms in a molecule of HCl can be used to determine*