Which of the following homogeneous and which are heterogeneous? Blood, carbon dioxide,Rock, steak,iron, concrete, air,oxygen, salt, milk.
2 answers
Some of those are elements in the periodic table or chemical compounds such as NaCl or Fe. Others are combinations of different materials. For example a rock may have several types of mineral in it. Now you try to figure out which is which.
blood can be filtered, or centifruged, separating its components.
Concrete is not a heterogenous mixture: look at the pebbles in it.
Milk has fat that floats to the top.
Concrete is not a heterogenous mixture: look at the pebbles in it.
Milk has fat that floats to the top.
1 answer