When scientists look at these examples, what do they know about the atoms? . carbon–12 carbon–14. a. the number of neutrons in each atom is not the same.. b. the atoms have different properties.. c. one atom has more protons than the other.. d. only one of the examples is an isotope.

When the water vapor cools it condenses select a number that represents his process on the

Define the kinetic molecular theory

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