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physical science H
final exam part 1
| Question | Answer |
|---|---|
| what is the current mold of the atom? | the electron cloud |
| what are the three particles that make up the nucleus and their charges? | protons(1+), neutrons(0), electrons(1-) |
| where are the particles located? | protons and neutrons in the nucleus and the electron is the electron cloud |
| where is the majority of the mass of an atom located? | in the nucleus |
| what property makes a certain element what it is? | the number of protons(atomic mass) |
| what is a oxidation number? | the number that shows how many electrons were lost or gained |
| why are the noble gases "happy" with electrons? | because they have a full outer shell |
| how are the elements grouped? | by how many valence electrons it has |
| The most reactive groups tend to be the alkali metals and the halogens. why? | alkali metals need to loose 1 e- and halogens need to gain 1 e- |
| Velocity | how fast the wave is moving |
| period | the inverse of frequency |
| frequency | the number of wavelengths in a given period of time |
| Amplitude | the height of a wave that measures the energy |
| wavelength | how long the wave is |
| kinetic Energy | the energy of motion |
| potential energy | is stored energy or energy in position |
| electromagnetic energy | is a from of energy that does not require a medium to travel |
| the transformation between PE and KE | if PE increases the KE decreases and if PE decreases KE increases |
| Define and give example of heat, light, and sound | heat- thermal(fire) light- radiant(sun) sound is just sound |
| newtons first law | inertia example: seat belt |
| newtons second law | relationship between acceleration and mass F=ma example: a feather falling |
| newtons third law | the conservation of Momentum example: rocket(every action has a reaction) |
| between alternating and direct current which has more electricity? | alternating current |
| between alternating and direct current how is the direction of the flow different? | one moves only one way(DC) and the other can alternate(AC) |
| how is static electricity produced? | like charges repel and opposite charges attract |
| how can friction acquire a static charge? | rubbing |
| how can induction acquire a static charge? | a charged object brought near a neural object |
| how can conduction acquire a static charge? | static transfers with touch |
| how is electricity and magnetism related | Moving electrical charges produce magentic fields. Moving magents produce electrical fields |
| Parallel Circuits | allow alternate pathways for the electrons flow |
| series circuits | have only one way for the electrons to flow |
| voltage | electrical push |
| amperage | measurement of current how many electrons per second |
| how does magnetism relates to a motor and a generator? | motor: turns electrical energy to mechanical generator: turns mechanical energy to electrical |
| how does magnetism relate to electromagnet? | using electricity cause the domains in a metal to have a north and a south |
| what is the difference between speed and velocity? | they are the same except velocity tells the direction |
| why do all objects accelerate? | because of gravity |
| the gravitational force between to objects is affected by the __________ of each object and the _______ between them | mass distance |
Created by:
forvereme97
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