Physical Science: Balancing Equations
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the little number after an element in a chemical equation called?
Back
Subscript
2.
FLASHCARD QUESTION
Front
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation) for H2 + S -> H2S?
Back
1,1 -> 1
3.
FLASHCARD QUESTION
Front
What can be placed to the left of a formula to make a chemical equation balanced?
Back
Coefficient
4.
FLASHCARD QUESTION
Front
What happens to the mass in a reaction between baking soda and phenol in a plastic bag?
Back
The mass stayed the same from the beginning to the end.
5.
FLASHCARD QUESTION
Front
Balance the chemical equation: __C2H6 + __O2 -> __CO2 + __H2O
Back
2,5 -> 4,6
6.
FLASHCARD QUESTION
Front
What is a chemical equation?
Back
A representation of a chemical reaction using symbols and formulas.
7.
FLASHCARD QUESTION
Front
What does it mean to balance a chemical equation?
Back
To ensure that the number of atoms for each element is the same on both sides of the equation.
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