Look at the picture. The picture tells a story. After you have looked at the picture carefully try and guess the story that is happening. Write 2 paragraphs guessing what is happening in the picture. A large part of science is making inferences backed up by evidence. So use whatever you can as evidence for your guess at the story. Make connections to what you have learned in other classes, and on your own. There is no wrong answer just try your best.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.