Which term do these characteristics describe? The substance is not uniform in appearance and each part of the mixture contains a combination of different ingredients in different ratios.

heterogeneous mixtures

pure substance

solution

homogeneous mixtures

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

Many pharmaceutical drugs are organic compounds that were originally synthesized in the laboratory. which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology

How are the terms group and period used on the periodic table