CHEMISTRY CODE: SCS21 2014-2015 SCHOOL YEAR INSTRUCTOR: Ms. Bui CLASSROOM: 510 LAB ROOM: 506 ATOMIC CONCEPT ISOTOPE – In action

Name______Period: ______Date: ______Subject: Chemistry

Science Starter: 1. Carbon has an atomic mass of 12.0111. Carbon is mostly composed of two isotopes: C-12 and C-13. C- 12 has an atomic mass of 12.0 amu and C-13 has an atomic mass of 13.0335 amu. Which isotope has a higher relative abundance?

2. How many protons and neutron does Neon-21 (Ne-21) have?

Video Question

1. Based on the videos, are there different water isotopes?

2. If so, explain why there are different water isotopes?

3. How can isotopes then be used to identify where the water has been?