Class Notes



Lesson Outline: Using the Periodic Table

Directions: Using the Florida Science Book pages 351-362, fill in the blanks.

A. What is the periodic table?

1. The is a chart of the elements arranged into rows and columns according to their chemical and physical properties.

2. The table can be used to determine how all are related

to one another.

B. Developing a Periodic Table

1. In the mid-1800s, Russian chemist and teacher created

a table to help classify the elements by their properties.

a. He placed the elements in rows of increasing atomic .

b. The elements in the table showed repeating patterns;

is a word used to describe such patterns.

c. For example, Mendeleev noticed patterns in the of

elements, the temperature at which a solid changes to a liquid.

2. After arranging the known elements in a periodic table, Mendeleev noticed

large gaps between some elements. He predicted that scientists would find

to fit into these spaces. Mendeleev’s predictions

were .

3. In the early 1900s, Henry Moseley found that the problem with Mendeleev’s table could be solved if the elements were arranged in rows

by .

4. The atomic number is the number of in the nucleus of

an atom of an element.

C. Today’s Periodic Table

1. You can identify the properties of an element by studying its

on the periodic table.

2. The shows the element’s name, atomic number,

chemical symbol, state of matter, and atomic mass.

3. A(n) is a column on the periodic table.

4. Elements in the same group have similar , which means

they react with other elements in similar ways.

5. The rows in the periodic table are called .

6. As you read from left to right across the periodic table, atomic number

by one for each element.

7. Most of the elements in the periodic table are , which

are shiny and conduct thermal energy and electricity.

8. Most nonmetals are on the side of the periodic table;

these elements do not conduct thermal energy and electricity.

9. Between the metals and nonmetals on the periodic table are the

, which have properties of metals and nonmetals.

D. How Scientists Use the Periodic Table

1. Scientists use the periodic table to predict the of the

new elements they create.

2. Elements that are each other on the periodic table

share similar properties.

Directions: Read and study the notes. Answer the summary question below!

|Cornell Notes |Lesson Title: Using the Periodic Table |

| |Objective: Describe that as you move from left to right in a period (row) on the Periodic Table, the number of |

| |protons increases by one.   |

| |Describe that elements found in the same group/family (column) have the same properties.   |

| | |

| | |

| |Notes: |

|Questions/Main Ideas: | |

|Period |Rows on the periodic table are called periods |

| |Do not have similar properties |

| | |

|Group |Vertical columns that are also called families |

| |Have similar chemical properties |

| |Have same number of electrons on outer level |

| | |

|Metals |Good conductors of electricity |

| |Malleable |

| |All are solids at room temperature except for Mercury |

| | |

|Nonmetals |Poor conductors of electricity |

| |Brittle or easily broken |

| |Many are gases at room temperature |

| | |

|Metalloids |Semiconductors |

| |Used in electronics |

| | |

| | |

| | |

| | |

|Summary: Find the element tin. Identify what group and period it is in and its category. |

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Objective:

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