
Atoms and the Periodic Table Review
Flashcard
•
Science
•
7th - 9th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
What are the electrons in the outermost energy level called?
Back
Valence electrons are the electrons in the outermost energy level of an atom, which are important for chemical bonding.
2.
FLASHCARD QUESTION
Front
Which element on the periodic table is not part of any family (group)?
Back
Hydrogen is the only element that is not part of any family or group on the periodic table.
3.
FLASHCARD QUESTION
Front
What is an anion?
Back
An anion is an atom that has gained one or more electrons, resulting in a negative charge.
4.
FLASHCARD QUESTION
Front
How does gaining an electron affect the size of an anion?
Back
An anion is typically larger than its neutral atom because the addition of an electron increases electron-electron repulsion.
5.
FLASHCARD QUESTION
Front
Who was the scientist that first arranged the periodic table?
Back
Dmitri Mendeleev is credited with the first arrangement of the periodic table based on atomic mass.
6.
FLASHCARD QUESTION
Front
Where are the most reactive metals found in the periodic table?
Back
The most reactive metals are found in Group 1 of the periodic table, known as the alkali metals.
7.
FLASHCARD QUESTION
Front
What is the periodic table?
Back
The periodic table is a tabular arrangement of chemical elements, organized by increasing atomic number and grouped by similar properties.
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