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Questions and Answers
What are the molecules that interact to produce new compounds in a chemical reaction called?
Which law states that matter can neither be created nor destroyed in a chemical reaction?
What is another name for the 'Law of Constant Proportions'?
In a chemical reaction, what remains conserved according to the law of conservation of mass?
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What is the defining structure of an element that cannot be broken by any chemical means?
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According to Dalton's Atomic Theory, what are atoms described as?
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What does the atomic radius represent?
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What is the mass number of an element equal to?
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What is atomic mass commonly expressed in terms of?
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How is molecular mass calculated?
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Study Notes
Chemical Reaction Concepts
- Molecules that interact to produce new compounds in a chemical reaction are called reactants.
- The Law of Conservation of Mass states that matter can neither be created nor destroyed during a chemical reaction.
- The Law of Constant Proportions is also known as the Proust's Law.
Conservation and Structure in Chemistry
- According to the law of conservation of mass, mass remains conserved; the total mass of reactants equals the total mass of products in a chemical reaction.
- The defining structure of an element that cannot be broken down by any chemical means is an atom.
Dalton's Atomic Theory and Atomic Properties
- According to Dalton's Atomic Theory, atoms are described as indivisible particles that combine in whole-number ratios to form compounds.
- The atomic radius represents the distance from the nucleus of an atom to the outermost electrons, indicating the size of the atom.
Mass and Molecular Calculations
- The mass number of an element is equal to the total number of protons and neutrons in its nucleus.
- Atomic mass is commonly expressed in terms of atomic mass units (amu).
- Molecular mass is calculated by summing the atomic masses of all atoms present in a molecular formula.
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Description
Test your knowledge on chemical reactions and the laws of chemical combination with this quiz. Explore concepts like reactants, products, conservation of mass, and more.
