Chemistry Quiz: Test Your Knowledge on Elements, Mixtures, and Friction

1. Which of the following is not among the first twenty elements? A. Chlorine B. Beryllium C. Iron D. Calcium


The correct answer is C. Iron. Iron is not among the first twenty elements in the periodic table.

When it comes to understanding chemistry, knowing the basic elements and their properties is essential. The periodic table is a great tool to help you navigate through the vast world of elements, from hydrogen to uranium. The first twenty elements play a crucial role in building the foundation of chemistry knowledge.

In this quiz question, the options provided are Chlorine, Beryllium, Iron, and Calcium. To determine the correct answer to the question, we need to look at the periodic table and identify which element is not among the first twenty.

The first twenty elements in the periodic table are: Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Sodium, Magnesium, Aluminum, Silicon, Phosphorus, Sulfur, Chlorine, Argon, Potassium, and Calcium.

By referring to this list, we can see that Iron is not among the first twenty elements. Iron is actually the 26th element in the periodic table with the symbol Fe and atomic number 26.

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