311C F09 Worksheet_1+A - NAME _ANSWER KEY_ Discussion...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
NAME ____ ANSWER KEY ____________ BIO 311C Discussion Worksheet #1 The Chemical Context of Life 1. An atom consists of a nucleus and an outer part called the electron cloud. The nucleus contains_ PROTONS __ and ___ NEUTRONS ___. 2. Fill in the charge for each type of subatomic particle: a. Proton __ +1 __ b. Neutron ___ 0 ___ c. Electron ___ -1 ___ 3. The atomic number of an element indicates the number of __ PROTONS __ in the nucleus of the atom, and also tells us the number of _ ELECTRONS _ outside the nucleus. This number is unique for each element. 4. The mass number of an element can vary. This number is the sum of the __ PROTONS _ and _ NEUTRONS _ of an atom. Thus, you can determine the number of _ NEUTRONS _ by subtracting the atomic number from the mass number. 5. 6. Isotopes of an element differ in the number of neutrons found in the nucleus. (A) One isotope of chlorine has 17 protons and 18 neutrons, (B) while another has 17 protons and 20 neutrons. For both isotopes fill in the atomic number, mass number, and
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

311C F09 Worksheet_1+A - NAME _ANSWER KEY_ Discussion...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online