Rutherford investigated atoms by firing small, positively charged particles at a thin sheet of gold foil. what results would he expect to see if he believed thomson’s model of the atom to be correct? all of the particles would bounce back from the front of the foil because the atom was a dense, solid ball of matter. most of the particles would pass straight through the foil because the atom was mostly the empty space in the electron cloud. most of the particles would pass through at a small angle because the atom is mostly empty space, but with a massive, dense, positively charged center. most of the particles would pass through with a few moving at small angles because the atom was a low-density, positive material with electrons in it.

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative