Periodic Table Assessment
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the atomic number of an element and what does it represent?
Back
The atomic number of an element is the number of protons in the nucleus of an atom. It determines the identity of the element.
2.
FLASHCARD QUESTION
Front
How do you determine the number of neutrons in an atom?
Back
The number of neutrons can be determined by subtracting the atomic number from the mass number (Neutrons = Mass Number - Atomic Number).
3.
FLASHCARD QUESTION
Front
What are groups in the periodic table?
Back
Groups are vertical columns in the periodic table that contain elements with similar chemical properties and the same number of valence electrons.
4.
FLASHCARD QUESTION
Front
What are periods in the periodic table?
Back
Periods are horizontal rows in the periodic table that indicate the number of electron shells in the atoms of the elements.
5.
FLASHCARD QUESTION
Front
Which elements belong to the same group in the periodic table?
Back
Elements in the same group have similar properties and the same number of valence electrons, such as Carbon (C) and Lead (Pb).
6.
FLASHCARD QUESTION
Front
What is the significance of the mass number of an atom?
Back
The mass number is the total number of protons and neutrons in an atom's nucleus, which helps in identifying isotopes of an element.
7.
FLASHCARD QUESTION
Front
What element has the atomic number 8?
Back
The element with atomic number 8 is Oxygen (O).
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