Error message

  • Deprecated function: Return type of DatabaseStatementBase::execute($args = [], $options = []) should either be compatible with PDOStatement::execute(?array $params = null): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2244 of /home/dh_sj288g/stemcore.org/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/dh_sj288g/stemcore.org/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/dh_sj288g/stemcore.org/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/dh_sj288g/stemcore.org/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/dh_sj288g/stemcore.org/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/dh_sj288g/stemcore.org/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseCondition::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 1652 of /home/dh_sj288g/stemcore.org/includes/database/query.inc).
  • Deprecated function: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in drupal_random_bytes() (line 2268 of /home/dh_sj288g/stemcore.org/includes/bootstrap.inc).
  • Deprecated function: rtrim(): Passing null to parameter #1 ($string) of type string is deprecated in url() (line 2349 of /home/dh_sj288g/stemcore.org/includes/common.inc).
  • Deprecated function: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in url_is_external() (line 2393 of /home/dh_sj288g/stemcore.org/includes/common.inc).
  • Deprecated function: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in url_is_external() (line 2395 of /home/dh_sj288g/stemcore.org/includes/common.inc).
  • Deprecated function: ltrim(): Passing null to parameter #1 ($string) of type string is deprecated in url() (line 2311 of /home/dh_sj288g/stemcore.org/includes/common.inc).

ChemJam

ChemJam INSTRUCTIONS:

1). Download and print the ChemJam lecture notes package.  (Click here to download the lecture notes)

2). The ChemJam video lectures require a password.  Contact your STEM Core Student Support Specialist to get the password.  

3). Click on the "Chapter 1"  link (below), select "Chapter 1 Videos," and then watch all of the chapter 1 videos while using the fill-in lecture notes. 

  • In order to master and retain the concepts of chapter 1, you should work on problems.  For each chapter, there are worksheets/tutorials available for download and printing .  All of the worksheets include answer keys.   To access the chapter 1 worksheets and tutorials, use the "Chapter 1" link (below), and then select "Chapter 1 Worksheets and Tutorials"
  • The ChemJam is designed for you to get through the first two chapters within two weeks.  Some of you may wish to continue with chapters 3 and 4 if you have time.  The links for all four ChemJam chapters are listed below.

Chapter 1 (Science, Measurements, and An Introduction to Matter and Energy)

Chapter 2  (Atoms and Elements)

Chapter 3  (Compounds)

Chapter 4  (Structure and Interactions of Covalent Compounds)