Metals , Nonmetals and Metalloids 8th grade Liliana Caraba

Do it Now questions: Please Choose to answer one of these questions using the calcium or magnesium articles : (7 Minutes) What is Calcium and how do you now about its implication in our life? What is magnesium and what do you know about its implication in our life?

Chemical elements in human body

Please choose your elements and get back in your teams. Students will work independently to research each element, but as a team they will have to identify the physical properties of each group of periodic table assign. T1=Group 1 T4=Group5 T2 =Group 2 T5=Group6 T3=Group3 T6=Group7

Presentation Students will have 3 minutes to research the element and 5 minutes to draw the chemical element on the construction paper. Each team will have to come to the board to orally present their founding about each element of the group and team conclusions about group physical properties.

Please research the following facts about your element Metals Nonmetals Metalloids Atomic number Atomic mass Number of Protons Number of electrons Group number Period number Physical characteristics (3) Chemical characteristics(2) Atomic number Atomic mass Number of Protons Number of electrons Group number Period number Physical characteristics Chemical characteristics Atomic number Atomic mass Number of Protons Number of electrons Group number Period number Physical characteristics Chemical characteristics

Physical Properties Metals Nonmetals 1 Good conductors of electricity Poor conductors of electricity 2 Ductile Not ductile 3 Malleable Not malleable 4 Luster Not luster 5 Solids Solids, liquids or gases 6 High melting point Low melting point 7 Good conductors of heat Poor conductors of heat

Chemical properties S.No Metals Nonmetals 1 React with acids Do not react with acids 2 Form cations Form anions 3 Form ionic bonds Form covalent bonds

Metalloids Metalloids Metalloids such as boron and silicon are the elements that form a diagonal separation between metals and nonmetals in the periodic table. Metalloids have properties somewhat between those of metals and nonmetals, and they often exhibit some of the characteristic properties of each type. The metalloids display some of the same properties as metals and a number of them are of considerable interest for their environmental toxicology. Six elements are classified metalloids. Boron Silicon Germanium Arsenic Antimony Tellurium

Properties of Metals Nonmetals and Metalloids All elements of the periodic table can be classified as metals or nonmetals, with the exception of a small number of so called metalloids. The main physical and chemical properties that chemically distinguish metals from nonmetals include Having a characteristic luster Being malleable and ductile Characteristically forming positively charged ions Having higher melting points and boiling points than nonmetals (solid at normal temperature and pressure) Having high density compared with nonmetals Usually being good conductors of heat and electricity

Please use the graphic organizer to record your observations about the chemical elements Please observe, analyze and write about four physical properties that you will observe looking at chemical Kit.