Activity 1. WORD PUZZLE
Objectives: Determine the word in the periodic trends.
Directions: 1. Look for the word puzzle 2. Write your answer in the space provided for
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1. is the temperature at which the solid-liquid phase change
occurs.
2. is the amount of mass it has per unit volume. Normally this is
measured in gcm-3 and at room temperature.
3.which states that if the chemical elements are listed in order
of increasing atomic number, many of their properties go through cyclical changes, with elements of
similar properties recurring at intervals.
4. is a highly reactive element that is very abundant on earth and
in the human body.
5. proposed a periodic system of elements that was based not
only on atomic weight.​