IB Semester 1 Final
Flashcard
•
Science
•
11th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is Avogadro's constant?
Back
Avogadro's constant (L or Nₐ) is 6.02 × 10²³ mol⁻¹, representing the number of particles (atoms, molecules, etc.) in one mole of a substance.
2.
FLASHCARD QUESTION
Front
How many hydrogen atoms are in 2.00 mol of NH₃?
Back
There are 3.61 × 10²⁴ hydrogen atoms in 2.00 mol of NH₃.
3.
FLASHCARD QUESTION
Front
What is the highest metallic character in Group 14?
Back
Tin (Sn) has the highest metallic character in Group 14.
4.
FLASHCARD QUESTION
Front
What is the correct formula for ammonium phosphate?
Back
The correct formula for ammonium phosphate is (NH₄)₃PO₄.
5.
FLASHCARD QUESTION
Front
What is a characteristic of all solid ionic compounds?
Back
All solid ionic compounds exhibit poor electrical conductivity.
6.
FLASHCARD QUESTION
Front
Which element is a d-block element?
Back
Cobalt (Co) is a d-block element.
7.
FLASHCARD QUESTION
Front
Define metallic character.
Back
Metallic character refers to the level of reactivity of a metal, which increases down a group and decreases across a period.
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