What is the Law of Conservation of Mass?
Law of Conservation of Mass

Flashcard
•
Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Mass is never created or destroyed in a chemical reaction.
2.
FLASHCARD QUESTION
Front
How many atoms are in the chemical formula H₂O?
Back
3 atoms (2 Hydrogen + 1 Oxygen).
3.
FLASHCARD QUESTION
Front
What does it mean when we say matter can be transformed?
Back
Matter can change forms or states but the total mass remains constant.
4.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
A number written below and to the right of an element symbol indicating the number of atoms of that element.
5.
FLASHCARD QUESTION
Front
How many Calcium (Ca) atoms are in Ca(OH)₂?
Back
1 atom.
6.
FLASHCARD QUESTION
Front
What is a coefficient in a chemical equation?
Back
A number placed in front of a chemical formula to indicate how many molecules are involved.
7.
FLASHCARD QUESTION
Front
What happens to the mass of reactants in a chemical reaction?
Back
The total mass of the reactants equals the total mass of the products.
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