Tag Archives: Isotope

Matter, Atomic Structure, and Bonding: Chapter 3 Quiz

Chapter 3 came to a close today with a quiz.  This marked the first time students were assessed with a chapter quiz without having previously seen an alternate version of the quiz.  The results varied widely, with a top score of 19/20, a low score of 4/20, and an average of 11/20. The results indicate some re-teaching may be necessary in addition to a renewed commitment by students to maintain the high level of study habits required for success in chemistry class.  It may also indicate the extended length of the current chapter made it challenging for students to maintain the focus needed to maintain content mastery.  We will discuss as a class on Monday.

Matter, Atomic Structure, and Bonding: Writing to Explain Prompt 1

To support our school’s goal of improving the ability of students to use writing to explain, the science department gave the first of three “writing to explain” science prompts this school year.  This first writing prompt serves as a baseline, with the next two prompts designed to assess growth in student ability to use writing to explain science.  Although students had the entire class period to respond to the prompt, students who finished early had the remainder of the class period to complete unfinished work.

Matter, Atomic Structure, and Bonding: Isotopes

We extended our learning about neutrons yesterday with an lesson about isotopes.  The Lesson 13 PowerPoint explains how certain elements like carbon always contain the same number of protons, but may contain different numbers of neutrons.  Students then practiced calculating the number of protons, neutrons, and electrons on the Lesson 13 Worksheet.  For homework, students should complete questions 1-9 at the end of Lesson 13 in the textbook.  For extra credit, students may earn 10 extra points by researching about one of the elements and compiling their research into an  Element Profile Project (see Chapter 2 Summary page in the textbook for instructions).  An additional 5 points may be earned by adding on a section explaining which isotopes of the selected element are naturally occurring, the proportion of each isotope, and the atomic structure of each isotope (the number of protons, neutrons, and electrons in each isotope).  If an isotope has a particular scientific use, that should also be included.  Remember, no school tomorrow.