
Chemistry Semester 1 Review
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the atomic number of an element?
Back
The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.
2.
FLASHCARD QUESTION
Front
How do you calculate the number of neutrons in an atom?
Back
Number of neutrons = Atomic mass - Atomic number.
3.
FLASHCARD QUESTION
Front
What is the significance of valence electrons?
Back
Valence electrons are the outermost electrons of an atom and are important for determining how an element reacts chemically.
4.
FLASHCARD QUESTION
Front
What is the periodic table?
Back
The periodic table is a tabular arrangement of elements, organized by increasing atomic number, which shows periodic trends in properties.
5.
FLASHCARD QUESTION
Front
What does it mean for a substance to have a different density?
Back
Density is the mass per unit volume of a substance. Different densities indicate that substances have different compositions or structures.
6.
FLASHCARD QUESTION
Front
How do you convert Celsius to Kelvin?
Back
To convert Celsius to Kelvin, add 273.15 to the Celsius temperature.
7.
FLASHCARD QUESTION
Front
What is the symbol for Magnesium?
Back
The symbol for Magnesium is Mg.
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