Classification of Matter Flashcards
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Questions and Answers

Can a particle be a single atom?

True

Can a particle be a molecule?

True

Define: particle

A singular atom or atoms bonded together which function as a unit.

What do subscripts represent?

<p>The number of atoms in that type in a specific molecule.</p> Signup and view all the answers

Is R a pure substance or a mixture?

<p>Pure substance</p> Signup and view all the answers

Is Sq2 & R a pure substance or a mixture?

<p>Mixture</p> Signup and view all the answers

Is T & RSq & R a pure substance or a mixture?

<p>Mixture</p> Signup and view all the answers

Is TSq2R a pure substance or a mixture?

<p>Pure substance</p> Signup and view all the answers

Do pure substances have a space or '&' between the letters?

<p>False</p> Signup and view all the answers

Do mixtures have an '&' between letters?

<p>True</p> Signup and view all the answers

Is SqR3 an element or compound?

<p>Compound</p> Signup and view all the answers

Is RSq an element or compound?

<p>Compound</p> Signup and view all the answers

Is Sq2 an element or compound?

<p>Element</p> Signup and view all the answers

Is T an element or compound?

<p>Element</p> Signup and view all the answers

How are the codes for elements different from those for compounds?

<p>The codes for the elements contain one capital letter.</p> Signup and view all the answers

Is Br2 an element, compound, or mixture?

<p>Element</p> Signup and view all the answers

Is NaHCO3 an element, compound, or mixture?

<p>Compound</p> Signup and view all the answers

Is C6H12O6 & H2O an element, compound, or mixture?

<p>Mixture</p> Signup and view all the answers

Is Cu & Zn an element, compound, or mixture?

<p>Mixture</p> Signup and view all the answers

Is CO2 an element, compound, or mixture?

<p>Compound</p> Signup and view all the answers

Is Al an element, compound, or mixture?

<p>Element</p> Signup and view all the answers

What is the difference between an atom and an element?

<p>An element is made up entirely of one type of atom.</p> Signup and view all the answers

What is the difference between a molecule and compound?

<p>A molecule is made of two or more atoms joined together chemically; a compound is a molecule that contains at least two different elements.</p> Signup and view all the answers

Is straining cooked pasta from water a physical or chemical separation?

<p>Physical</p> Signup and view all the answers

Is using a fuel cell to separate water into hydrogen and oxygen a physical or chemical separation?

<p>Chemical</p> Signup and view all the answers

______ can be separated by physical means.

<p>Mixtures</p> Signup and view all the answers

______ need to be separated by chemical means.

<p>Compounds</p> Signup and view all the answers

Particle drawing for an element:

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Study Notes

Classification of Matter

  • A particle can be a single atom or a molecule, functioning as a unit.
  • Definition of particle: singular atom or bonded atoms.

Subscripts and Molecules

  • Subscripts indicate the number of specific atoms in a molecule.

Pure Substances vs. Mixtures

  • Pure substances do not have spaces or "&" between letters.
  • Mixtures contain an "&" between letters.
  • Examples indicate that "Sq2 & R" and "T & RSq & R" are mixtures.
  • "TSq2R" is identified as a pure substance.

Elements and Compounds

  • Compounds are identified by codes containing multiple elements (e.g., "SqR3", "RSq").
  • Elements are represented with a single capital letter (e.g., "Sq2", "T", "Br2", "Al").
  • Molecules consist of two or more atoms; compounds contain at least two different elements.

Physical vs. Chemical Separation

  • Straining pasta is a physical separation.
  • Using a fuel cell to separate water into hydrogen and oxygen is a chemical separation.

Separation Methods

  • Mixtures can be separated by physical means, while compounds require chemical separation.

Differences Between Atoms, Elements, and Molecules

  • An element consists of one type of atom, whereas a molecule is formed by two or more atoms joined together.
  • The distinction between a molecule and a compound is that a compound is a molecule containing at least two different elements.

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Test your knowledge on the classification of matter with these informative flashcards. Each card delves into essential definitions and concepts such as particles, pure substances, and mixtures. Perfect for students looking to solidify their understanding of matter in chemistry.

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