Is it a compound, element, or mixture?
1. each sample has the sample properties as every other
2.a physical combination of two or more
3.kinds of matter are present in any
4.each sample does not necessarily have the same properties as every other

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter