Atoms and Periodic Table
Flashcard
•
Science
•
10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are the elements called in Groups 3-12 of the periodic table?
Back
Transitional Metals
2.
FLASHCARD QUESTION
Front
Elements in the same _________ have the same number of valence electrons.
Back
Group
3.
FLASHCARD QUESTION
Front
What is the average mass of an element with isotopes: 24.1% at 75.23 amu, 48.7% at 74.61 amu, and 27.2% at 75.20 amu?
Back
74.92 amu
4.
FLASHCARD QUESTION
Front
If an atom has an atomic mass of 27 and an atomic number of 13, how many neutrons does it have?
Back
14
5.
FLASHCARD QUESTION
Front
__________ are the smallest unit of an element that maintains the properties of the element.
Back
Atoms
6.
FLASHCARD QUESTION
Front
What is the atomic number of an element?
Back
The number of protons in the nucleus of an atom.
7.
FLASHCARD QUESTION
Front
What is the significance of the periodic table's groups?
Back
Elements in the same group have similar chemical properties.
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