Slide 1 Bell Ringer  What is a Mole?  What is the mass of a NaCl molecule? Slide 2 Chapter 7.1b Slide 3 Common counting units:  shoes by the pair (pair = 2) …

Slide 1Chemical Reactions Slide 2 7.1 DESCRIBING REACTIONS Slide 3 Changes in Substances Physical change – altered appearance but same composition  Water to steam …

Slide 1 Announcements…Monday April 15 1 We are now in Chapters 8-9 all sort of jumbled together Judge what matters by ABNG problems! Chapter 8: Pretty much self study,…

Slide 1 Types of nuclear processes Atoms can eject protons or helium nuclei & get lighter. They can swallow a neutron & spit out the proton to get heavier. Whenever…

Announcements…Monday April 15 * We are now in Chapters 8-9 all sort of jumbled together Judge what matters by ABNG problems! Chapter 8: Pretty much self study, not many…

Bell Ringer What is a Mole? What is the mass of a NaCl molecule? Chapter 7.1b Common counting units: shoes by the pair (pair = 2) eggs by the dozen (dozen = 12) paper by…

1. C HAP TE R 3 The Bulk Reseller I n the preceding chapter we examined one type of eBay business, the second-hand reseller, who resells used merchandise acquired at garage…