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BC Science 9 Ch2
BC Science 9 Chapter 2
| Question | Answer |
|---|---|
| International symbol for each element | chemical symbol |
| Most elements are derived from ________ words | Greek |
| Describes a substance's ability to react chemically with other substances to form new products | chemical properties |
| Are typically hard, shiny, malleable, ductile and good conductors of heat and electricity | metals |
| Are typically gases or brittle solids at room temperature | non-metals |
| Makes up over 90% of the atoms in the universe and is highly reactive | hydrogen |
| Mixed with carbon to make steel | iron |
| Most rocks are made up of this gaseous element plus other elements like silicon, iron, and aluminum | oxygen |
| Very reactive alkali metal; also found in table salt | sodium |
| Deadly pale yellow gas | chlorine |
| Liquid at room temperature; is poisonous | mercury |
| Used in computer chips | silicon |
| 'Pop Test'is testing for this element | hydrogen |
| Creator of the modern periodic table | Mendeleev |
| The number of protons in the atom of an element | atomic number |
| Mass of an average atom of an element | atomic mass |
| Atomic mass is measured in these units | atomic mass units |
| An electric charge that forms on an atom when it gains or loses an electron | ion charge |
| Separates metals and non-metals on the period table | metalloids |
| Found to the left on the periodic table | metals |
| Found to the right on the periodic table | non-metals |
| Vertical columns on the periodic table | chemical families |
| Groups of elements that have similar physical and chemical properties | chemical families |
| Highly reactive family, particularly with oxygen and water | alkali metals |
| Family of metals that will burn in air if heated | alkaline earth metals |
| Highly reactive family consisting of gases, a liquid, and a solid | halogens |
| Most stable and unreactive family | Noble gases |
| Diagram that shows the electron arrangement around the nucleus | Bohr model |
| Region surrounding the nucleus of an atom | electron shell |
| Maximum number of electrons in the first electron shell | two |
| Maximum number of electrons in the second electron shell | eight |
| The outermost electron shell | valence shell |
| Electrons in the outermost electron shell | valence electrons |
| In a Noble gas the valence shell is said to be this | full |
| To become a positive ion, an atom must do this | lose an electron |
| To become a negative ion, an atom must do this | gain an electron |
| Metals form this type of an ion | positive |
| Non-metals form this type of an ion | negative |
Created by:
darrinaustin
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