Module 8 - Chemical Equations
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a coefficient in a chemical equation?
Back
The large number in front of a chemical formula that indicates how many molecules or moles of that substance are present.
2.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
The small number written after an element symbol that indicates the number of atoms of that element in a molecule.
3.
FLASHCARD QUESTION
Front
What type of reaction is represented by the equation: 2H₂O₂ → 2H₂O + O₂?
Back
Decomposition reaction, where a single compound breaks down into two or more products.
4.
FLASHCARD QUESTION
Front
What is the net ionic equation for the reaction between silver nitrate and sodium chloride?
Back
Ag⁺ + Cl⁻ → AgCl(s), showing only the ions that participate in the formation of the precipitate.
5.
FLASHCARD QUESTION
Front
How do you balance the equation: ___ SeCl₆ + ___ O₂ → ___ SeO₂ + ___ Cl₂?
Back
The balanced equation is 1 SeCl₆ + 1 O₂ → 1 SeO₂ + 3 Cl₂.
6.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
In a chemical reaction, matter is neither created nor destroyed; the mass of reactants equals the mass of products.
7.
FLASHCARD QUESTION
Front
What is a synthesis reaction?
Back
A type of chemical reaction where two or more simple substances combine to form a more complex product.
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