3.8. Chemical Compounds Overview
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Questions and Answers

What type of compound is formed when a metal reacts with oxygen?

  • Basic oxide (correct)
  • Acid
  • Salt
  • Acidic oxide

Which ion is released when a base is dissolved in water?

  • Acidic residue ion
  • Metal ion
  • Hydroxide ion (OH⁻) (correct)
  • Hydrogen ion (H⁺)

What is produced when an acid reacts with a base?

  • An oxide
  • A salt and water (correct)
  • Another base
  • Another acid

Which of the following is an example of an acidic oxide?

<p>CO₂ (B)</p> Signup and view all the answers

What ions are released when a salt dissolves in water?

<p>Metal ions and acidic residue ions (C)</p> Signup and view all the answers

What distinguishes a chemical compound from a simple substance?

<p>A compound is formed from two or more types of atoms, while a simple substance involves only one type of atom (D)</p> Signup and view all the answers

Which statement best describes the relationship between the properties of elements and the properties of the compounds they form?

<p>The compound has completely new and different properties than the elements that form it. (B)</p> Signup and view all the answers

Sodium (Na) is a metal, and chlorine (Cl) is a poisonous gas. What is a distinguishing property of the compound formed by these two elements?

<p>It is a solid, crystalline substance, with a salty taste. (C)</p> Signup and view all the answers

In which of the following examples does the compound formed retain the properties of the elements it is formed from?

<p>None of the above, compounds do not retain the properties of elements. (D)</p> Signup and view all the answers

According to the provided classification, which category does NaCl belong to?

<p>Salts (C)</p> Signup and view all the answers

Which of the following is a base, according to the provided classification?

<p>Ca(OH)₂ (B)</p> Signup and view all the answers

Which of the following is an example of an acid according to the provided classification?

<p>SO₃ (A)</p> Signup and view all the answers

Which of the following can be considered a simple substance, according to the provided text?

<p>Cl₂ (D)</p> Signup and view all the answers

Flashcards

Basic Oxides

Compounds formed when a metal combines with oxygen, usually creating a basic solution when dissolved in water.

Acidic Oxides

Compounds formed when a nonmetal combines with oxygen, often creating an acidic solution when dissolved in water.

Bases

Substances that release hydroxide ions (OH-) when dissolved in water.

Acids

Substances that release hydrogen ions (H+) when dissolved in water.

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Salts

Substances that release metal ions and acidic residue ions when dissolved in water. They are formed by the reaction of an acid and a base.

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Chemical Compounds

Substances formed when two or more different types of atoms combine chemically.

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Simple Substance

A substance made from the same type of atoms.

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Chemical Bond

The force that holds atoms together in a molecule.

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Properties of Compounds

Sodium chloride (NaCl), also known as table salt, has properties distinct from its constituent elements, sodium (a reactive metal) and chlorine (a poisonous gas).

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Study Notes

Chemical Compounds

  • Chemical compounds are formed when atoms combine.
  • An oxide is a compound formed when a metal combines with oxygen
  • Basic oxides are formed when metals combine with oxygen.
  • Acidic oxides are formed when nonmetals combine with oxygen.
  • Bases are compounds that release hydroxide ions (OH-) when dissolved in water.
  • Acids are compounds that release hydrogen ions (H+) when dissolved in water.
  • Salts are compounds formed from the reaction of an acid and a base.
  • Salts are neutral compounds.

Types of Chemical Compounds

  • Oxides:
    • Formed by the combination of a metal or nonmetal with oxygen.
    • Basic oxides are formed from metals and acidic oxides are formed from nonmetals.
  • Bases:
    • Release hydroxide ions (OH⁻) in water.
    • Often contain a metal and hydroxide.
  • Acids:
    • Release hydrogen ions (H⁺) in water.
    • Often contain hydrogen and a nonmetal.
  • Salts:
    • Formed by the reaction of an acid and a base.
    • Neutral compounds.

Classification of Inorganic Compounds

  • Inorganic compounds are classified into oxides, bases, acids, and salts.
  • Examples of inorganic compounds include oxides like Na₂O, bases like NaOH, acids like HCl, and salts like NaCl.

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Description

This quiz explores the formation and types of chemical compounds, including oxides, acids, bases, and salts. Understand how these compounds interact and their properties in chemical reactions. Test your knowledge of chemistry concepts related to the behavior of different compounds.

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