Use the periodic table in the tools bar to complete the electron configurations for the following elements: beryllium (be): 1sc2sd

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

What is a metal replacement reaction