Bohr believed that electrons travelled in orbits about the atomic nucleus.
a. circular
b. elliptical
c. irregular
d. oval-shaped user: the modern atomic model is also sometimes called the model.
a. quark
b. einstein
c. final frontier
d. quantum mechanics

Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.

What is the temperature of one mole of helium gas at stp?

Using the periodic table, complete the table to describe each atom. type in your answers