Grade Level: 9-12
Concept: Learn to read and identify the properties of the periodic table
Estimated Duration: 90 minutes
Objectives
Students will be able to:
-
read the periodic table
-
explain the properties of elements based on their placement within the periodic table
-
name many elements, their atomic number, and other properties
Materials
Handouts of a periodic table
Crayons
Science journals or paper
Index cards, one for each element,
Differentiation Strategies
These strategies are used to meet the varied needs of all learners:
-
Varying academic levels: uses mixed-ability groups to allow students to learn from one another, small-group and whole-group participation
-
Visual learners: incorporates colored and labeled drawings of the periodic table
-
Auditory learners: uses direct questioning to discuss the properties of groups and elements
-
Kinesthetic learners: engages students in guessing games to determine an element based on its properties
Key Vocabulary
Alkali metal
Alkaline earth element
Atomic mass
Groups
Halogen
Metalloid
Noble gas
Periodic table
Periods
Procedures
Warm Up
Direct Instruction
-
Below the periodic table or on the back of the handout, have students list the common properties of the groups and metals, nonmetals, and semimetals.
-
Ask students what happens to atomic mass and atomic size as you proceed across a period or down a group.
-
Distribute one note card naming an element to each student, and have students list the element in their science journals or on a sheet of paper and use their labeled periodic tables to identify the properties the element might have based on its placement in the periodic table.
-
Call on students to name their element and describe how they determined what properties the element might have.
Practice
-
Is the element most likely a gas at room temperature?
-
Is the element highly reactive?
-
Is the element larger and lighter than other elements in its period?
-
Does the element form salts?
-
Is the element abundant on earth?
Assessment
Closure
-
Remind students that all substances on earth are made up of these 109 elements.
-
Applied learning: Ask students to look for instances in which they encounter the names of the elements in their daily lives (aluminum foil, copper wires, oxygen tanks). Ask them to consider what properties these elements have that make them useful.