In the first 20 elements, the three noble gases are Helium (He), Neon (Ne), and Argon (Ar). Now, that the students have got the notes, they can easily understand the concept of the first 20 ...

Show students that you have 100 cards (5 for each of the first 20 elements). Explain that each card contains information about one of the first 20 atoms of the periodic table. The students’ job is to ...

See if you can organize the first 25 elements of the periodic table in order in the quiz below. The periodic table as we know ...

Before distributing the cards, explain that each card contains information about electrons and energy levels for the first 20 elements of the periodic table. The students’ job is to read the card ...

Elements can be named after places, minerals, mythological figures, or people. Mendeleev got his due in 1955, when element 101, Mendelevium, was named after him. Take Our Latest Quizzes : ...