Volume is a measure of the amount of space and object takes up. Density is the ratio of mass to volume and thus does not depend on the amount of a substance. Describe how you find the density of a substance.

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Which element would mostly likely have an electron affinity measuring closest to zero

An unsaturated hydrocarbon is a hydrogen-carbon compound with a. a network solid structure b. single bonds c. single bonds in a branched-chain structure d. double or triple bonds