Chem Q4 Benchmark practice quiz

Chem Q4 Benchmark Study Guide

Hello students,

This quiz is a study guide and provides practice problems and correct answer explanations in preparation for the Q4 Chemistry Benchmark.

WebWork Semester 1 Final Project

Goal create a javascript code library accessible from your main website.

Step 1: create a new page code/java/js-dir.html

Step 2: add link to directory to the navbar in your main site

Step 3: In  your js-dir page, create a vertical navbar  with links to the following pages.

code/java/alert.html , inner-html.html,  for-loop.html, if-then.html, date.html

Step 4: create thes 5 pages and build custom examples of code using each of these javascript statements.  Be creative!

Page layout


Each of your javascript example pages should follow this format;

Title: example  <h2>Java Script FOR Loop</h2>

Next write a brief description of what the code is intended to do.

The following section should include the output from the javascript. For exmple, if your code is to display the numbers 1-10, the output would be 1,2, etc …10.

The final section should show the javascript code to the user.  Simply copy and paste the javascript code snippet into this html section of the page but do not include the <script> and </script> tags.

That’s it!



Physics Unit Index

This index describes the basic thematic unit structure of the course.

Semester 1:

Unit 1: Things you need to know -The Scientific Method. Significant Figures. Scientific Notation.
Unit 2: Kinematics – equations of motion, motion in 2 dimensions,vectors, circular motion
Unit 3: Newton’s Laws, Free Body Diagrams
Unit 4: Gravitation – Kepler, Cavendish, orbits, the force of gravity near the earth’s surface and the gravitational attraction between 2 masses
Unit 5: Normal forces, friction, the inclined plane, tension
Unit 6: Impulse and Momentum
Unit 7:
Unit 8:
Unit 9:
Bonus topic – E=mc^2

Semester 2:

Unit 10: Thermodynamics
Unit 11: Waves
Unit 12: The nature of Light

Chem 15-2 Naming simple hydrocarbons

Warm up:  {predictive / diagnostic} Write the  Greek prefixes for the numbers 1-10.

Ans: The Greek language prefix for numbers 1 to 10 are:


There are 3 major families of hydrocarbons recognizable by their chemical properies, for example how reactive they are

Alkanes:  Do not react easily but burn with oxygen if they are hot enough – Alkanes make great fuels —Name some common alkanes.

Vocabulary: textbook pg 750-751

Molecular formula

Structural formula

Condensed structural formula


Chemistry: Salinity

Warm Up: Write the formulas for M, m, % by weight, and salinity (ppm).

Learning Objective: Using salinity to determine freezing point of salt water.

Agenda: Practice problems

Table quiz

Ice caps and Global warming video.


Salt water comes in a variety of concentrations and there is a name for each;

Water salinity based on dissolved salts
Fresh water Brackish water Saline water Brine
< 0.05% 0.05–3% 3–5% > 5%

For this exercise,  use the following values;

0.025% 1% 3.5% 7%

Q1: convert concentrations from % to ppt

a) Fresh Water

b) Brackish Water

c) Saline

d) Brine

Q2: Calculate the molal concentration for a – d

a) Fresh Water

b) Brackish Water

c) Saline

d) Brine


Q3: Write the formula for freezing point depression of water (hint: the coefficient Kf = 1.86 degree C/m)

Q4: How many ions does 1 molecule of salt create when it is dissolved in water?

Q5: The freezing point of water is 0 degrees C (32 deg F), calculate the freezing point depression for a – d

a) Fresh Water

b) Brackish Water

c) Saline

d) Brine


Q6: Calculate the freezing point for a-d

a) Fresh Water

b) Brackish Water

c) Saline

d) Brine

This completes the quiz.

Salinity reference:

Earth Science: