Ablock of wood has density of 0.6g/cm3 and a volume of 1.2 cm3 what is the mass of the block of wood

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?

Compare and contrast solutions and suspensions

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17