Conservation of Mass Flashcards

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Questions and Answers

What does the law of conservation of mass state?

  • Mass in an isolated system is neither created nor destroyed (correct)
  • Mass can be created through chemical reactions
  • Mass of products and reactants are unrelated
  • Mass can be destroyed by physical transformations

What are reactants?

Substances that take part in and undergo change during a reaction.

What is an atom?

The basic unit of a chemical element.

What is a covalent bond?

<p>A chemical bond involving the sharing of electron pairs between atoms.</p> Signup and view all the answers

What does diatomic mean?

<p>Consisting of two atoms.</p> Signup and view all the answers

What is an element?

<p>A part or aspect of something abstract that is essential or characteristic.</p> Signup and view all the answers

What is a subscript?

<p>A letter, figure, or symbol written or printed below the line.</p> Signup and view all the answers

What is a chemical formula?

<p>A mathematical relationship or rule expressed in symbols.</p> Signup and view all the answers

What are products in a chemical reaction?

<p>An article or substance that is manufactured or refined for sale.</p> Signup and view all the answers

What is a chemical reaction?

<p>A process involving rearrangement of the molecular or ionic structure of a substance.</p> Signup and view all the answers

What is a chemical equation?

<p>The symbolic representation of a chemical reaction.</p> Signup and view all the answers

What is a coefficient in chemistry?

<p>A multiplier or factor that measures some property.</p> Signup and view all the answers

What is a balanced chemical equation?

<p>A chemical equation where the number of different atoms in the reactants equals that in the products.</p> Signup and view all the answers

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Study Notes

The Law of Conservation of Mass

  • Mass in an isolated system is neither created nor destroyed during chemical reactions or physical transformations.
  • The mass of products in a chemical reaction equals the mass of the reactants.

Reactants

  • Substances that participate and undergo changes during chemical reactions.

Atoms

  • The fundamental units of chemical elements.

Covalent Bonds

  • A type of chemical bond formed by the sharing of electron pairs between atoms.
  • Shared pairs, or bonding pairs, create a stable balance of attractive and repulsive forces.

Diatomic

  • Refers to molecules consisting of two atoms.

Elements

  • Essential components or aspects of chemical substances.

Subscript

  • Written or printed notation that appears below the line, commonly used in chemical formulas to indicate the number of atoms.

Chemical Formulas

  • Mathematical relationships or rules expressed using symbols to represent chemical substances.

Products

  • Articles or substances produced or refined, typically for sale, as a result of chemical reactions.

Chemical Reactions

  • Processes involving the rearrangement of molecular or ionic structures rather than mere physical changes or nuclear reactions.

Chemical Equations

  • Symbolic representations of chemical reactions, with reactants on the left and products on the right.

Coefficients

  • Factors that serve as multipliers to quantify the number of molecules or moles of a substance in chemical equations.

Balanced Chemical Equations

  • Equations that adhere to the law of conservation of mass, showing equal numbers of each type of atom in reactants and products.
  • Achieved through a trial and error process to ensure balance.

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