Presentation on theme: "Physical and Chemical Properties Vocabulary of Instruction:"— Presentation transcript:
1 Physical and Chemical Properties Vocabulary of Instruction: 8th GradeUnit 2:Physical and Chemical PropertiesLesson 1:The Periodic TableVocabulary of Instruction:
2 1. Periodic TableIs a chart with all the chemical elements organized by increasing atomic number.
3 2. MetalsAn element that easily gives up its valence electrons in a chemical reaction and that can be classified on its physical properties
4 3. NonmetalsAn element which is dull-colored, brittle and non-conductor of electricity or heat. It usually gain or share valence electrons in a chemical reaction.
5 4. MetalloidsAn element which contain properties of both metals and nonmetals in terms of malleability, ductility, conductivity, and luster.
6 5. GroupGroupA set of elements comprising a vertical column of the periodic table. There are 18 groups in the Periodic Table.
7 6. PeriodPeriodA set of elements comprising a horizontal row of the periodic table. There are 7 periods in the Periodic Table.
8 7. FamilyA group (vertical column) of elements with similar chemical properties.
9 8. Shell / Energy LevelIs the outside part of an atom around the atomic nucleus. In general, elements in the same group contain the same number of valence electrons and elements in the same period contain that number of shells.