Unit+3++Elements

Objectives

5a: Students will know that elements are pure substances that are represented by chemical symbols. 5b: Students recognize that only a few elements make up Earth's crust, atmosphere, oceans and living things.

Guiding Questions 1. Why is an element considered a pure substance? 2. What elements make up the largest portion of solid earth, living matter, oceans and the atmosphere?

VOCABULARY

===‍ ‍ __element__ - a substance composed of atoms having an identical number of protons in each nucleus === === __‍compound__ - a substances whose molecules contain atoms from different elements ===

===‍ ‍ __chemical symbol__ - a one- or two-letter abbreviation for an element's name (O - oxygen) ===

===‍ ‍ __chemical formula__ - a set of symbols that describe the number and kind of elements in a compound (NaCl) ===

‍ ‍ __matter__ - anything that has mass and takes up space
===‍ ‍ __molecule__ - a particle of matter made up of two or more atoms joined tightly together ===

===‍ ‍ === Important Links media type="youtube" key="yxb4AtBf52M" width="560" height="315" Study Jams: Elements and Compounds Bite Size Chemistry Elements - Chem4Kids Compounds - Chem4Kids How it Works: Elements and Compounds

Periodic Table of Videos

Songs and Games

Meet The Elements Element Song Element Lab Periodic Table Game Element Flash Cards Elements Games

Adopt an Element resources ** Best Periodic Table for this Project ** ** Periodic Table for Kids ** ** Chemicool Periodic Table ** ** Element Prices **