Writing Nuclear Equations
Write nuclear equations for
(a) mercury-201 undergoing electron capture; , (b) thorium-231 decaying to protactinium-231.
Write a balanced nuclear equation for the reaction in which oxygen-15 undergoes positron emission.
Chemistry Skills and Reasoning 1 Week 11 Chapter 14: Liquids and Solids - Remember: gases are low density, highly compressible, and ﬁll the container - Solids are high density, slightly compressible, and rigid (keeps their shape) - Changes of state are physical changes: no chemical bonds are broken - When a substance changes from solid to liquid to gas, the molecules remain intact - The changes in state are due to change in the forces among molecules rather than in those within the molecules - Solid to liquid: as energy is added, the motions of the molecules increase, and they eventually achieve the greater movement and disorder characteristic of a liquid - Liquid to gas: as more energy is added, the