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Q2 Week 2 P T Test
Q2 Week 2 Periodic Table Test
| Question | Answer |
|---|---|
| The Atomic number is determined by only one thing → the number of ____ in the atom’s nucleus. | protons |
| Developed a system of symbols for naming the elements, using 1–2 letters of each element’s Latin name. | Jacob Berzelius |
| The identity of the element is always determined by its proton _____. | number |
| The first letter of an element symbol is _____ capitalized | always |
| Each shell or ______ level has a specific number of electrons it can “hold.” | energy |
| _____ derives its name from Thor, the Norse god of thunder. | Thorium |
| Atomic ____ is determined by adding the number of protons plus the number of neutrons in any atom. | Mass |
| What is the number of electrons on each energy level known as? | Electron Configuration |
| Most periodic tables do not list the number of what? | neutrons |
| To find the number of neutrons we subtract the number of ____ from the atomic mass. | protons |
| If an atom has a mass of 12 and has 6 protons, how many NEUTRONS does it contain? | 6 |
| If an atom has a mass of 7 and has 3 protons, how many NEUTRONS does it contain? | 4 |
| If an neutral atom has 2 protons, how many electrons does it have? | 2 |
| The periodic table is an arrangement of the chemical elements by ______ atomic number which displays the elements so that we can see trends in their properties. | increasing |
| When elements are arranged in order of increasing atomic number, there is a regular repetition of their chemical and physical properties. What is this definition? | periodic law |
| What is a column of elements in the periodic table having similar valence electron arrangement? | family |
| Each element in a family or group has the same number of _____ electrons. | valence |
| A valence electron is an electron in the ______ energy level of a neutral atom. | outermost |
| What is a horizontal row on the periodic table of the elements; also called a series known as? | period |
| The horizontal row number equals every atom's number of _____ levels, also called orbitals. | energy |
| What does this describe? an element that is typically dense, solid, ductile, malleable, highly conductive, and chemically reactive, especially in the presence of nonmetal elements. | metal |
| What does this describe? an element with characteristics between those of metals and nonmetals; also called semiconductors. | metalloid |
| What does this describe? an element that typically has four or more valence electrons and that does not exhibit the general properties of metals. | nonmetal |
| What is an element in Group 1 of the periodic table, having one valence electron that it can easily lose to form a 1+ cation, making it extremely reactive? | alkali metal |
| What are elements in Group 2 of the periodic table, having two valence electrons? | alkaline earth metals |
| What are any elements in Groups 3–12 of the periodic table, typically having one or two valence electrons? | transition metals |
| What is an element in Group 17 of the periodic table having seven valence electrons? | halogen |
| Because the noble gasses all have full outer energy levels, each on is inert. Which word best describes inert? | nonreactive |
| What is the total distance from an atom’s nucleus to the outermost orbital (energy level)? | Atomic Radius |
| The Atomic Radius ____ from left to right across a period. | decreases |
| The Atomic Radius increases down a group→ Each row on the periodic table adds a “shell” or energy ____ to the atom, which makes the atom larger. | level |
| What is the energy required to remove an electron from an atom? | Ionization Energy |
| Ionization Energy tends to increase across a period because the radius decreases from left to right, so the electron you are removing is closer to the _____ and harder to remove. | nucleus |
| What is the ability of an atom to hold electrons tightly? | Electronegativity |
| What are negatively charged ions formed when nonmetallic atoms receive one or more electrons, making them larger than the neutral atom? | Anions |
| What are positively charged ions formed when an atom of a metal loses one or more electrons, making them smaller than the neutral atom. | Cations |
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