How is a mixture different from a pure substance? A. Pure substances are made up of mixtures.

B. A pure substance is heterogeneous.

C. A mixture is made of one substance.

D. Mixtures can be separated by physical means.

Which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase. o

Why is carbon ideal for making different compounds?

Draw the lewis structure for the trisulfur s3 molecule. be sure to include all resonance structures that satisfy the octet rule.