Chemistry Basics
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Questions and Answers

What is the basic unit of matter?

  • Neutron
  • Atom (correct)
  • Electron
  • Molecule
  • What type of bond is formed when atoms share electrons?

  • Hydrogen bond
  • Covalent bond (correct)
  • Ionic bond
  • Polar bond
  • What is the pH scale a measure of?

  • Concentration of hydrogen ions (correct)
  • Concentration of bases
  • Concentration of acids
  • Concentration of oxygen
  • What is an acid?

    <p>A compound that forms H+ ions</p> Signup and view all the answers

    What is the basic unit of matter?

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

    What type of bond holds atoms together in a compound?

    <p>Covalent bond</p> Signup and view all the answers

    What is a characteristic of all isotopes of an element?

    <p>They have the same atomic number</p> Signup and view all the answers

    What does the pH scale measure?

    <p>Concentration of hydrogen ions</p> Signup and view all the answers

    What is the term for a mixture of two or more substances?

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

    What type of bond is formed between two atoms that gain or lose electrons?

    <p>Ionic bond</p> Signup and view all the answers

    What are lipids primarily composed of?

    <p>Carbon and hydrogen</p> Signup and view all the answers

    What is the term for a long chain of amino acids?

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

    What do enzymes do in chemical reactions?

    <p>Speed up chemical reactions</p> Signup and view all the answers

    What do atoms share in a covalent bond?

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

    What is a characteristic of isotopes of an element?

    <p>They have the same number of protons</p> Signup and view all the answers

    What is the structure formed when atoms are joined together by covalent bonds?

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

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