Rosa and Katie developed a deck of cards they can use to review the information on the periodic table. One game they play involves pairing symbols of elements that have similar
properties.
(Hint: Use your periodic table)
Which of the following elements would form a pair?
A. Sn and Sb
B. Be and Ca
C. Pt and Hg
D. Ne and CI

Which solution is an example of a nonelectrolyte? a. iodine in hexane b. sodium nitrate in waterc. acetic acid in waterd. hydrogen chloride in water

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.