
Chemical reactions and lightning
Flashcard
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A process in which substances (reactants) are transformed into different substances (products) through the breaking and forming of chemical bonds.
2.
FLASHCARD QUESTION
Front
What is a double replacement reaction?
Back
A type of chemical reaction where two compounds exchange ions or bonds to form two new compounds.
3.
FLASHCARD QUESTION
Front
What are the products of the reaction Co2(SO4)3 + NaOH?
Back
Co(OH)3 + Na2SO4.
4.
FLASHCARD QUESTION
Front
What is the product of the synthesis reaction Ca + N2?
Back
Ca3N2.
5.
FLASHCARD QUESTION
Front
What role does lightning play in atmospheric chemistry?
Back
It facilitates the fixation of atmospheric nitrogen.
6.
FLASHCARD QUESTION
Front
What is the general equation for a double replacement reaction?
Back
AB + CD → AD + CB, where A and C are cations and B and D are anions.
7.
FLASHCARD QUESTION
Front
What is the significance of balancing chemical equations?
Back
Balancing chemical equations ensures that the law of conservation of mass is obeyed, meaning the number of atoms of each element is the same on both sides of the equation.
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