Atomic Structure & Chemical Reactions Biology 11 (2.1)
Flashcard
•
Biology
•
11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the solvent in a Kool-Aid mixture of powder, sugar, and water?
Back
Water is the solvent in the Kool-Aid mixture.
2.
FLASHCARD QUESTION
Front
According to which law is matter neither destroyed nor created during a chemical reaction?
Back
The Law of Conservation of Mass states that matter is neither destroyed nor created during a chemical reaction.
3.
FLASHCARD QUESTION
Front
How do you calculate the average atomic mass of an isotope with different forms?
Back
Average atomic mass = (percentage1 * mass1 + percentage2 * mass2 + percentage3 * mass3) / 100.
4.
FLASHCARD QUESTION
Front
What is the number of protons in an element with an atomic number of 7?
Back
The element with an atomic number of 7 has 7 protons.
5.
FLASHCARD QUESTION
Front
What are the products of the chemical reaction Zn + CuSO4?
Back
The products are ZnSO4 and Cu.
6.
FLASHCARD QUESTION
Front
Define an isotope.
Back
An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons.
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 upheld, meaning the number of atoms of each element is the same on both sides of the equation.
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