Questions and Answers
What is matter classified as?
How are mixtures classified?
Mixtures contain two or more _____________ which can be separated through ______________.
pure substances, physical change
Heterogeneous mixtures have _______________ and homogeneous mixtures called _____________ have one phase.
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What are pure substances classified as?
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Elements are represented by ___________ and made of ___________.
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What are the chemical symbols for carbon and oxygen?
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O occurs as?
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Elements _______________, which cannot be broken down.
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What are compounds represented by and made of?
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What are the chemical formulas for salt and water?
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Molecules can be broken down into ______________ through ______________.
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Study Notes
Classification of Matter
- Matter is divided into two main categories: mixtures and pure substances.
Mixtures
- Mixtures are further classified into heterogeneous and homogeneous types.
- Mixtures consist of two or more pure substances that can be separated by physical means.
Heterogeneous vs. Homogeneous Mixtures
- Heterogeneous mixtures have two or more distinct phases, allowing for visible separation.
- Homogeneous mixtures, also known as solutions, consist of a single phase where components are uniformly distributed.
Pure Substances
- Pure substances fall into two categories: elements and compounds.
Elements
- Elements are represented by chemical symbols and are made up of atoms.
- The chemical symbol for carbon is C, and for oxygen, it is O.
- Oxygen occurs as O2, indicating that it consists of two atoms.
- Elements are defined by their atomic structure and cannot be broken down further.
Compounds
- Compounds are represented by chemical formulas and are composed of molecules.
- Common examples of chemical formulas include sodium chloride (NaCl) for salt and water (H2O).
- Molecules in compounds can be broken down into atoms through chemical changes.
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Description
This quiz features flashcards focused on the classification of matter, including definitions and types of mixtures and pure substances. Test your understanding of heterogeneous and homogeneous mixtures, as well as the properties of pure substances. Perfect for students looking to solidify their knowledge on this fundamental topic in chemistry.
