Periodic Table ¥ 186060/92 elements were known, but disagreements over average atomic masses. 1 st Int’l Congress of Chemists (1860) decided actual #’s.
1 Smallest possible particle of a chemical element that retains that element’s chemical properties? that retains that element’s chemical properties? A)
Bohr Models and Lewis Dot Structures. Atoms ** Basic unit of matter Consists of: Electrons, Protons, & Neutrons.
The Nature of Molecules Chapter 2. 2 Why should we study atoms? Substances with mass and space – Matter All matter is composed of atoms. Understanding.
The Periodic table of Elements By: Mr. Castillo & Mr. Buenrostro.
12.3 The Periodic Table The periodic table organizes the elements according to how they combine with other elements (chemical properties). The periodic.
Eighth Grade Review. Matter is anything that takes up space and has mass Matter is anything that takes up space!
Chapter 5: The Periodic Law 5.1: History of the Periodic Table 5.2: Electron Configuration & the Periodic Table 5.3: Electron Configuration & Periodic.
The Nature of Molecules Chapter 2. 2 Atomic Structure All matter is composed of atoms. Understanding the structure of atoms is critical to understanding.
Chapter 19: Chemical Bonding “Isn’t It Ionic?”. Questions for Review.
PERIODIC TABLE. Chapter Fifteen: Elements and the Periodic Table 15.1 The Periodic Table of the Elements 15.2 Properties of the Elements.
Eighth Grade Review. Matter is anything that has mass and occupies space. All matter is made up of small particles called atoms.