What is the Law of Conservation of Mass?
Physical Science Final Exam

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•
Science
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of reactants equals the total mass of products.
2.
FLASHCARD QUESTION
Front
What does the atomic mass of an element represent?
Back
The atomic mass of an element represents the average mass of an atom of that element, measured in atomic mass units (amu).
3.
FLASHCARD QUESTION
Front
What type of reaction is represented by the equation 4Si + S8 → 2Si2S4?
Back
This is a synthesis reaction, where two or more reactants combine to form a single product.
4.
FLASHCARD QUESTION
Front
Is burning wood a physical or chemical change?
Back
Burning wood is a chemical change because it results in the formation of new substances (ash, smoke, gases) and involves a chemical reaction.
5.
FLASHCARD QUESTION
Front
What is the chemical symbol for Gold?
Back
The chemical symbol for Gold is Au.
6.
FLASHCARD QUESTION
Front
What are transition metals?
Back
Transition metals are elements found in groups 3-12 of the periodic table, characterized by their ability to form variable oxidation states and colored compounds.
7.
FLASHCARD QUESTION
Front
What is the difference between a physical change and a chemical change?
Back
A physical change alters the form or appearance of a substance without changing its chemical composition, while a chemical change results in the formation of new substances.
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