S1 Exam - Unit 6 practice
Flashcard
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the atomic radius?
Back
The atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons. It is a measure of the size of an atom.
2.
FLASHCARD QUESTION
Front
Which element in Period 2 has the greatest atomic radius?
Back
Lithium (Li) has the greatest atomic radius in Period 2.
3.
FLASHCARD QUESTION
Front
What type of element is Silicon?
Back
Silicon is a metalloid, which means it has properties of both metals and nonmetals.
4.
FLASHCARD QUESTION
Front
Which element has the largest atomic radius: Nitrogen (N), Oxygen (O), Phosphorus (P), or Sulfur (S)?
Back
Phosphorus (P) has the largest atomic radius among these elements.
5.
FLASHCARD QUESTION
Front
What happens to atomic radius as you move down a group in the periodic table?
Back
Atomic radius increases as you move down a group because you add more shells (energy levels) of electrons.
6.
FLASHCARD QUESTION
Front
What are noble gases?
Back
Noble gases are a group of inert (not reactive) gases found in Group 18 of the periodic table.
7.
FLASHCARD QUESTION
Front
What is a semiconductor?
Back
A semiconductor is a material that has electrical conductivity between that of a conductor and an insulator, often used in electronic devices.
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