Questions and Answers
What is a substance?
What is the smallest part of the element that retains its properties?
Atom
What is the simplest substance that cannot be broken down by chemical means?
Element
Define a compound.
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What does the periodic table show?
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Metals are found on the right-hand side of the periodic table.
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Nonmetals are found on the right side of the periodic table.
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What is a mixture?
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What is the chemical name of carbon dioxide?
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What is air considered in terms of substance classification?
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What is the symbol for gold?
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What is nitrogen commonly referred to as?
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What is the symbol for iron?
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What happens when magnesium burns in oxygen?
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When elements combine to form compounds, these elements are now changed and have different ____________________.
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Study Notes
Classification of Substances
- Substances can be classified as elements, compounds, or mixtures.
- A substance refers to any sample of matter.
Atoms and Elements
- An atom is the smallest unit of an element that possesses the element's properties.
- Elements are the simplest form of substances, unable to be broken down chemically into simpler substances.
Compounds
- Compounds consist of two or more elements that are chemically bonded together.
Periodic Table
- The Periodic Table organizes all known elements in a specific structure.
- Metals are predominantly located on the left side of the Periodic Table, while non-metals occupy the right side.
Mixtures
- Mixtures are formed when two or more substances combine without any chemical bonding.
- Air exemplifies a mixture as it comprises various gases like nitrogen (N), carbon dioxide (CO2), oxygen (O2), water vapor, and argon (Ar).
Notable Compounds and Elements
- Carbon dioxide (CO2) is a specific chemical compound known for its role in the environment.
- Gold is represented by the symbol Au and is classified as an element.
- Iron, identified by the symbol Fe, is a common metal utilized in various applications.
- Magnesium is another metal, known for burning brightly in oxygen and forming magnesium oxide (MgO).
Properties of Compounds
- When elements interact to form compounds, their properties change significantly, as evidenced by the combination of magnesium and oxygen resulting in magnesium oxide.
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Description
Test your knowledge on the classification of substances, including elements, compounds, and mixtures. This quiz covers key concepts such as atomic structure and the organization of the Periodic Table. Challenge yourself to identify the properties and examples of each category!
