(group 1, excluding Hydrogen): very reactive metals
(group 2): somewhat reactive metals
(group 17); very reactive non-metals
(group 18): very unreactive gaseous non-metals
(groups 3-12)

How is the solubility of a carbon dioxide gas in water increase?

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.

Which can be observed only in a microscopic view? a) structure of a muscle cell b) shape of a soybean plant c) foam insulation d) x-ray of a knee joint