Chemical Bonding Basics
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Questions and Answers

What is an ion?

  • A molecule with covalent bonds
  • An atom that has lost or gained one or more electrons (correct)
  • A compound involving metal atoms only
  • A substance made of a unique kind of atom

In which type of compound are electrons typically shared between non-metal ions?

  • Ionic compounds
  • Covalent compounds (correct)
  • Polyatomic compounds
  • Diatomic compounds

What happens in an exothermic reaction?

  • Energy released from bond formation is less than the energy required to break the bonds (correct)
  • Only metal atoms are involved in the reaction
  • More energy is required to break the bonds than released during bond formation
  • No energy changes occur during the reaction

Which of the following is NOT a way to increase a reaction rate?

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

What does the law of conservation of mass state?

<p>Mass can't be created or destroyed (B)</p> Signup and view all the answers

Explain the difference between an exothermic and endothermic reaction in terms of energy released or required.

<p>In an exothermic reaction, more energy is released from the formation of bonds than the energy required to break the bonds. In an endothermic reaction, more energy is required to break the bonds than the energy released from the formation of the bonds.</p> Signup and view all the answers

What are the four ways to increase the rate of a reaction?

<p>The four ways to increase the rate of a reaction are increasing concentration, temperature, increasing surface area, and adding a catalyst.</p> Signup and view all the answers

Define what ionic compounds are and explain how they differ from covalent compounds.

<p>Ionic compounds are made up of metal and non-metal atoms that transfer electrons with one another. Covalent compounds, on the other hand, involve the sharing of electrons typically between non-metal and non-metal ions.</p> Signup and view all the answers

List the seven diatomic elements and provide an example of a polyatomic element.

<p>The seven diatomic elements are N2, O2, F2, Cl2, Br2, I2, H2. An example of a polyatomic element is P4 S8.</p> Signup and view all the answers

Explain the concept of mass conservation in chemical reactions.

<p>The concept of mass conservation states that mass cannot be created or destroyed in a chemical reaction. It can only change forms.</p> Signup and view all the answers

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