Katrina inserts a key into her car’s ignition. she turns the key, putting her car into ignition mode. in this mode, some energy is used to increase the temperature of the car’s fuel. this energy allows the fuel to combust and the car to move. what’s this energy called?

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Ted and emily played a mixed doubles tennis match against jack and brenda. in the second match. ted and brenda played against jack and emily. which type of chemical reaction does the situation demonstrate?

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.