Scientists have changed the model of the atom as What experimental evidence led to the development
they have gathered new evidence. One of the atomic
of this atomic model from the one before it?
models is shown below.
• A few of the positive particles aimed at a gold foil
seemed to bounce back.
O The colors of light emitted from heated atoms had
very specific energies.
Experiments with water vapor showed that
elements combine in specific proportions.
Cathode rays were bent in the same way whenever
a magnet was brought near them.

Describe the work performed by a ski lift in terms of kinetic and gravitational potential energy

What is transferred to an object when work is done

1. study the scenario. the particles in some system are moving around quickly. a few minutes later, the particles are moving, on average, more slowly. how does this change in motion affect the temperature of the system? the temperature of the system did not change. the speed of the particles does not affect temperature, the number of particles affects the temperature.the temperature of the system is lower now than it was initially. faster moving particles result in a higher temperature for the system.the temperature of the system is higher now than it was initially. slower moving particles result in a higher temperature for the system.the temperature of the system did not change. the speed of the particles has no effect on the temperature, only the type of atom affects the temperature.