the capacity for an item or object to do work, or produce heat
100
what is kinetic energy?
the energy that is associated with movement
100
what are the three types of radiation?
Alpha, Beta, Gamma
100
why do nuclear reactions occur? what is the goal?
because the nuclei are unstable, and they want to be stable.
100
what is enthalpy?
the heat content of a system ( delta H)
200
how does heat travel
from hot object to cool object
200
what type of reaction is it when heat is given off?
an exothermic reaction
200
what is nuclear fusion?
where your elements come together during radioactive decay
200
what is nuclear fission?
where your element splits during radioactive decay
200
Iodine has an atomic number of 53, and an atomic mass of 127, how many of each type of subatomic particles are there? (assuming your atom is neutral).
there are 53 protons/electrons, and there are 74 neutrons
300
how are temperature and heat different?
heat describes an energy transfer, temperature measures the motion of the molecules/atoms
300
what type of reaction is it when heat is absorbed?
endothermic
300
which is the biggest particle given off in a radioactive decay?
Alpha
300
what is the most dangerous type of radioactive decay?
gamma
300
what is the law of conservation of energy?
the law that says energy can neither be created nor destroyed
400
what does the phrase "specific heat capacity" mean?
The amount of heat a substance can hold (the amount of heat it takes to raise 1 gram of your substance 1 degree C
400
why can we not accurately use the specific heat equation when there is a phase change?
because it takes energy to change phases, but it wont change the temperature
400
If gamma radiation does not give off any any subatomic particles, what does it do?
gives off energy in the form of light and heat
400
what is it called when a radioactive element decays to the point where you have only half of your original element left?
half-life
400
In a reaction if your delta H at the beginning of the reaction is 375 and your final delta H is 150? is this reaction endothermic or exothermic?
-225, exothermic
500
A 250 g copper pip is heated from 10 degrees to 31 degrees. what is the energy needed to heat the pipe? (specific heat of copper is .390 J/g degrees celcius) (q = m* c* delta t)
2047.5 J
500
a 20,000 g concrete block has a temerature change of 45 degrees, and it takes 3,060,000,000 to heat this block, what is the specific heat of concrete? (q =m*c *delta T)
3400 J/g celcius
500
Radon (Rn) undergoes beta decay (loses an electron) how many of each kind of subatomic particle are there?
86 protons, 136 neutrons, and 85 electrons
500
Uranium (U) undergoes Alpha decay (loses 2 protons, and 2 neutrons) how many of each kind of subatomic particles are there?