1. Physical Science Unit Overview: Chapter 7 – Types of Matter Lesson 1 – Properties of Matter Lesson 2 – Elements Lesson 3 – Classifying Elements Lesson 4 – Mixtures Lesson 5 - Compounds Chapter 8 – Changes in Matter Lesson 1 – Chemical Reactions Lesson 2 – Metals and Alloys Lesson 3 – Salts

2. Classifying Elements Lesson Overview: 1) What do we already know? 2) Vocabulary 3) Drawings 4) Main Ideas 5) Review Types of Matter: Lesson 2

3. Classifying Elements What do we already know? BrainPOP Teaser BrainPOP Teaser 1)What is an element? a) It is the simplest form of matter and makes up all other substances. 2) What are atoms? a) The smallest particle of matter that has the properties of elements. Page 1

4. Classifying Elements: Vocabulary Part I 1) Protons: are located in the nucleus of an atom. 2) Neutrons: are located in the nucleus of an atom. 3) Electrons: are located outside of the nucleus and orbit around the nucleus. 4) Atomic Number: is the number of protons in an atom. Every element has a different atomic number. 5) Atomic Weight: Is the measure of its mass that is calculated by adding the number of protons and neutrons together. 6) Molecule: is a particle that contains more than one atom joined together. Page 2 Types of Matter: Lesson 2

5. Page 3 Classifying Elements: Vocabulary Part II (pg. 354-355) Types of Matter: Lesson 2 7) Metal: is a substance/element that conducts heat and electricity. 8) Nonmetal: is a substance/element that is a poor conductor of heat and electricity. 9) Noble gases: are nonmetallic elements that are inert. They are helium, neon, argon, krypton, xenon and radon. 10) Metalloids: are a very small group of elements that have properties of both metals and nonmetals.. 11) Periodic Table: arranges all known elements into rows and columns of increasing atomic number.

6. Page 4 Classifying Elements (pg. 366-367) Types of Matter: Lesson 2

7. Page 5 Classifying Elements: Drawings (pg. 368) Types of Matter: Lesson 2

8. Classifying Elements: Main Ideas 1)Classify characteristics of elements (pg. 366-367)  Page 6 Types of Matter: Lesson 2 MetalsNonmetalsNoble GasesMetalloids Make up 75% of the periodic table There are 17 nonmetal elements There are 6 Noble gases They are a very small group Usually solid at room temperature Usually gas at room temperature Properties of both metal & nonmetal Good conductor of heat & electricity Poor conductor of heat & electricity Inert: rarely react with other elements Conduct heat & electricity better Shinny when polished Do not usually shine when polished than nonmetals, but not as good as Can be bent &flatten without breaking They will break rather than bend metals Some are magneticHelium, neon, Exm: Silver, gold, copper & iron Exm: Helium, Nitrogen & oxygen argon, krypton, xenon radon Exm: boron, silicon & germanium

9. 2) How is the periodic table organized? (pg. 368-369)  -Organized all known elements in rows and columns in increasing atomic numbers. -Different colors represent the different groups of elements (nonmetals, metals, & metalloids) -Columns are called families or groups -Rows are called periods -Each box represents an element & it includes the name, symbol and atomic number. Page 7 Classifying Elements: Main Ideas Types of Matter: Lesson 2

10. 1)Summarize the main ideas 1)Click here to watchClick here to watch 2)Think, Talk, and Write Page 9 Elements: Review Types of Matter: Lesson 2