Earth’s atmosphere is a mixture of gases. Which gas makes up almost 80% of the atmosphere by volume? A.
oxygen
B.
nitrogen
C.
carbon dioxide
D.
water vapor

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.

In saturated organic compounds, all the bonds between carbon atoms are called?

What effect does a decrease in temperature have on the overall rate of a chemical reaction? a decrease in temperature decreases . the reaction rate will