Identify the type
of reaction

C, H,OH + O2 → CO2 +H2O

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

pie chart because it is in percents ( % )

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.