UNIT 1 REVIEW Date: 3-3-2021
Name:
Complete this review to check your understanding of the unit.
Use the photo of the test tube to answer Questions 1-2.
1. The liquids in the test tube float on top of each other in layers.
The least / most dense liquids are on the bottom. The liquids
lower in the tube have less / more mass per unit volume than
the liquids in the upper part of the tube.

um i think it might be a car?

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.

answer: mole of the gas

answer: mole of the gasexplanation: