Chemical Formulas

Flashcard
•
Science
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
A subscript is a small number written to the right of an element symbol that indicates the number of atoms of that element in a molecule.
2.
FLASHCARD QUESTION
Front
What does a coefficient in a chemical formula represent?
Back
A coefficient is a number placed in front of a chemical formula that indicates how many molecules of that compound are present.
3.
FLASHCARD QUESTION
Front
How many different elements are in the compound C6H12O6?
Back
There are 3 different elements: Carbon (C), Hydrogen (H), and Oxygen (O).
4.
FLASHCARD QUESTION
Front
What is the correct chemical formula for 3 Hydrogen (H), 1 Sulfur (S), and 4 Oxygen (O)?
Back
The correct formula is H3SO4.
5.
FLASHCARD QUESTION
Front
What do the red numbers in a chemical formula typically represent?
Back
The red numbers usually represent coefficients, indicating the number of molecules.
6.
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 also determines the element's identity.
7.
FLASHCARD QUESTION
Front
What is the difference between a subscript and a coefficient?
Back
A subscript indicates the number of atoms of an element in a molecule, while a coefficient indicates the number of molecules of a compound.
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