The Periodic Table

The purpose of the periodic table is to organize all known elements.

The elements are arranged in size order from left to right and from top to bottom.

Elements that are close to each other in the periodic table have similar properties.

<p>Groups are vertical columns in the periodic table. They are represented by Roman numerals.</p> Signup and view all the answers

<p>Periods are horizontal rows in the periodic table. They are represented by normal numbers.</p> Signup and view all the answers

<p>The middle section of the periodic table is called the transition elements or the transition metals.</p> Signup and view all the answers

<p>The elements in Group 1 are hydrogen, lithium, sodium, potassium, rubidium, cesium, and francium.</p> Signup and view all the answers

<p>The elements in Group 2 are the alkaline earth metals.</p> Signup and view all the answers

<p>Group 8 is also known as Group 0. The elements in this group are noble gases.</p> Signup and view all the answers

<p>Period 1 consists of only two elements: hydrogen and helium.</p> Signup and view all the answers

<p>The atomic number tells us the number of protons in an atom.</p> Signup and view all the answers

<p>The mass number represents the combined number of protons and neutrons in an atom.</p> Signup and view all the answers

<p>The periodic table is organized by atomic number.</p> Signup and view all the answers

<p>An element's symbol contains the atomic number, mass number, element name, and element symbol.</p> Signup and view all the answers

<p>Elements are placed in the periodic table based on their period (horizontal) and group (vertical).</p> Signup and view all the answers

<p>The first letter of an element's symbol is always a capital letter.</p> Signup and view all the answers

<p>The atomic number tells us the number of protons in an atom.</p> Signup and view all the answers

<p>The mass number tells us the combined number of protons and neutrons in an atom.</p> Signup and view all the answers

<p>The atomic number only tells us the number of protons, while the mass number tells us the number of protons and neutrons.</p> Signup and view all the answers

<p>The periodic table provides a systematic arrangement of elements based on their atomic number, allowing for easy identification of an element's properties.</p> Signup and view all the answers

<p>To show elements with similar properties (C)</p> Signup and view all the answers

<p>To organize the elements in size order (D)</p> Signup and view all the answers

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

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

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

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

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

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

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

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

<p>The number of protons in an atom (C)</p> Signup and view all the answers

<p>The number of protons and neutrons in an atom (B)</p> Signup and view all the answers

<p>To determine the average mass of an atom (A)</p> Signup and view all the answers

<p>Based on their atomic number (C)</p> Signup and view all the answers

<p>The chemical name of the element (C)</p> Signup and view all the answers

<p>It represents the chemical name of the element (D)</p> Signup and view all the answers

<p>To determine the number of protons in an atom (B)</p> Signup and view all the answers

<p>The number of protons in the atom (D)</p> Signup and view all the answers

<p>Vertical columns that represent similar elements (C)</p> Signup and view all the answers

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