What is the periodic table?
Periodic Table Concepts and Questions

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Science
•
5th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A chart that organizes all known chemical elements based on their atomic number, electron configuration, and recurring chemical properties.
2.
FLASHCARD QUESTION
Front
What are electrons?
Back
Negatively charged particles that orbit the nucleus of an atom.
3.
FLASHCARD QUESTION
Front
How do electrons move in an atom?
Back
Electrons move quickly around the nucleus in specific energy levels.
4.
FLASHCARD QUESTION
Front
What is a mole in chemistry?
Back
A unit that measures the amount of a substance, equivalent to 6.022 x 10^23 particles.
5.
FLASHCARD QUESTION
Front
How do you calculate the mass of a substance in grams from moles?
Back
Multiply the number of moles by the atomic or molecular mass of the substance.
6.
FLASHCARD QUESTION
Front
What is the atomic mass of oxygen?
Back
Approximately 16 g/mol.
7.
FLASHCARD QUESTION
Front
What are the five common types of chemical reactions?
Back
Synthesis, decomposition, single replacement, double replacement, and combustion.
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