Drill What was the purpose of flame test? Is the flame test a good way to determine the identity of a cation?

Objective SWBAT: Explore the periodic table in order to describe its arrangement of elements.

SAT/HSA Enrichment A particular toxin prevents cellular production of usable energy. Cells that are affected by this toxin are unable to carry out many of their normal functions. Which of these organelles would be most directly harmed by this toxin? Ribosomes the nucleus Mitochondria the vacuole

Engagement: 1 minute Quick Write (used to assess student’s prior knowledge about the periodic table) Periodic Table-Brain POP

Inquiry Activity 20 Min Trends in Physical Properties Purpose Students find trends in the physical properties of elements 20 Min

Organizing the Elements How are Elements Organized!

Organizing the Elements In a self-service store, the products are grouped according to similar characteristics. With a logical classification system, finding and comparing products is easy. You will learn how elements are arranged in the periodic table and what that arrangement reveals about the elements.

Searching For an Organizing Principle Chemists used the properties of elements to sort them into groups. Chlorine, bromine, and iodine have very similar chemical properties.

Mendeleev’s Periodic Table Mendeleev arranged the elements in his periodic table in order of increasing atomic mass. The periodic table can be used to predict the properties of undiscovered elements.

The Periodic Law In the modern periodic table, elements are arranged in order of increasing atomic number.

The Periodic Law The periodic law: elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties. The properties of the elements within a period change as you move across a period from left to right. The pattern of properties within a period repeats as you move from one period to the next.

Metals, Nonmetals, and Metalloids Three classes of elements are metals, nonmetals, and metalloids. Across a period, the properties of elements become less metallic and more nonmetallic.

Metals, Nonmetals, and Metalloids Metals, Metalloids, and Nonmetals in the Periodic Table

Metals, Nonmetals, and Metalloids Metals in the Periodic Table

Metals, Nonmetals, and Metalloids Nonmetals in the Periodic Table

Metals, Nonmetals, and Metalloids Metals are good conductors of heat and electric current. 80% of elements are metals. Metals have a high luster, are ductile, and are malleable.

Metals, Nonmetals, and Metalloids Uses of Iron, Copper, and Aluminum

Metals, Nonmetals, and Metalloids Uses of Iron, Copper, and Aluminum

Metals, Nonmetals, and Metalloids Uses of Iron, Copper, and Aluminum

Metals, Nonmetals, and Metalloids In general, nonmetals are poor conductors of heat and electric current. Most nonmetals are gases at room temperature. A few nonmetals are solids, such as sulfur and phosphorus. One nonmetal, bromine, is a dark-red liquid.

Metals, Nonmetals, and Metalloids A metalloid generally has properties that are similar to those of metals and nonmetals. The behavior of a metalloid can be controlled by changing conditions.

Metals, Nonmetals, and Metalloids If a small amount of boron is mixed with silicon, the mixture is a good conductor of electric current. Silicon can be cut into wafers, and used to make computer chips.

Short Quiz 1. The modern periodic table has elements arranged in order of colors. melting and boiling points. increasing atomic mass. increasing atomic number.

Short Quiz 2. Mendeleev arranged the elements in his periodic table in order of increasing atomic number. number of protons. number of electrons. atomic mass

Short Quiz 3. Which one of the following is NOT a general property of metals? ductility malleability having a high luster poor conductor of heat and electricity

Parent Groups Students will get into their parent groups. Each student should pick a number 1-3.

Sub group Go to the station that has the number that you picked. Use the periodic table at the station to complete your periodic table worksheet and label your periodic table. When finished return to your seat. 15 min

Parent Group Discuss your answers within your group and be sure to complete your worksheet and label your periodic table. 15 min

Summary What is the periodic table? Compare and Contrast the difference between Mendeleev’s periodic table and the modern periodic table. Why is it better for the Periodic table to be arranged by atomic number vs. atomic mass? How would you show your understanding of the arrangement of the periodic table?

Homework Periodic Table Arrangement Worksheet.

Summary Can you identify the three main parts of the periodic table? Can you identify the 4 Valence Electron Blocks? Can you identify the 7 groups of the periodic table? What trend do you see when you observe the periodic table from left to right? Can you assess the value or importance of the Periodic Table? Why do scientists need a periodic table? When do you think scientist use the periodic table?