1. Metals , Nonmetals and Metalloids
8th grade Liliana Caraba

2. 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?

3. Chemical elements in human body

4. 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 T4=Group5
T2 =Group T5=Group6
T3=Group T6=Group7

5. 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.

6. 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

7. 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

8. 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

9. 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

10. 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

11. 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.