4.3 ASSIGNMENT: Science Blog: Why Do Chemicals React? (Due February 15)

ASSIGNMENT: Science Blog: Why Do Chemicals React? (10 points)

This Week's Science Blog Topic: For this week's blog entry, watch the video and answer the questions that follow.

• Everything you see around you is made of chemicals: the air that you breathe, the water that you drink, and the chair you are sitting on. Entropy is a characteristic of all chemicals, and more ordered chemicals have lower entropy. List two chemicals that you think have low entropy and two that have high entropy. Explain the reason for your choices.
  

• If an exothermic chemical reaction occurs, the surroundings become warmer. Where does this energy come from?
  

• Imagine a chemist is in the lab and trying to make some chemical reactions happen. In one reaction she reacts chemicals in an exothermic reaction and there is an increase in entropy. A second chemical reaction she is trying to run is endothermic and there is a decrease in entropy. Which of the two reactions is more likely to occur and why?
  

Blog Guidelines: 

• Each blog post should be at least one paragraph (3-5 sentences minimum).

• Use complete sentences, proper grammar and punctuation.

• All posts/comments must be respectful.  Vulgarity or rudeness will result in school disciplinary action.

Instructions:

1. Find the Blog Menu block.  Click Add an entry about this course.

You can enter a title for your post and then write your post.  You can insert images or links to help explain your ideas.  When you have finished, click Save Changes.

2. Get link to your course blog

After you save your post, highlight and copy (cntl +c) the url at the top of the blog.  You can also get the link by going to the Blog Menu block and clicking View my entries for this course

2.  To submit in Moodle, Click Add Submission.

3.  Paste your blog URL into the submission box.

4.  Click Save Changes to submit your assignment.

Are you interested in knowing how to read and comment on other students' science blog posts?  Just go to the Blog Menu and choose View all entries for this course.  You can add comments and also read comments others have left on your posts.

After you have completed this assignment, it will be marked as complete with a checkmark after it has been graded by the instructor.