Physical Science 100 BYU- Final Exam Comprehensive Review Questions And Answers Graded A+

Acceleration - Any change in speed or direction Activation energy - the amount of energy needed to start a reaction All objects experience the same acceleration due to - gravity, but only in the absence of air friction Alloys - mixture of metals Alpha decay - a nucleus gives up a helium nucleus Amplitude - The height of the wave, how far you are from the equilibrium Angular Momentum conserved - Angular momentum = Mass * Velocity * Radius Ice Skater ex. As she pulls her arms in, velocity increases while angular momentum remains the same As you approach the speed of light three things happen - Things become short, mass increases, time slows down. Short, fat, slow Asbestos - Stringy, single chain/double chain Atomic size increases from - down and to the left. Helium is smallest Fr largest Atoms are made up of - protons, neutrons, and electrons Band gap is necessary - for electron flowBeta decay - Neutron splits, proton goes to the nucleus and electron goes out ex. C 14 goes to N7+ an electron, mass stays the same Bigger gaps require ____energy releasing a ___ frequency color - more / higher Bigger than iron - Split apart to release energy Blue stars - Bigger, hotter, burns really quick Blue stuff - moves closer Bohr Model - Nucleus surrounded by electrons