Chemistry Fundamentals Quiz

Ionic bonds form between two atoms that have a large difference in electronegativity, resulting in the transfer of electrons. Covalent bonds, on the other hand, form between two atoms that share one or more pairs of electrons.

The nucleus, consisting of protons and neutrons, is located at the center of the atom. Protons have a positive charge, while neutrons have no charge. Electrons, with a negative charge, occupy energy levels outside the nucleus.

DNA serves as a template for the synthesis of messenger RNA, which carries genetic information to the ribosomes. Ribosomes then translate the genetic code into a specific sequence of amino acids to form a protein.

<p>Exothermic reactions release heat energy, often resulting in an increase in temperature. Endothermic reactions, on the other hand, absorb heat energy, often resulting in a decrease in temperature. Example: combustion reaction (exothermic) vs. photosynthesis (endothermic).</p> Signup and view all the answers

<p>The periodic table organizes elements by their atomic number, grouping them into periods and groups based on recurring chemical properties. An element's position on the periodic table reveals its atomic number, atomic mass, and chemical reactivity.</p> Signup and view all the answers