Metals, nonmetals, metalloids

properties of metals, nonmetals, and metalloids

1. Metals, Nonmetals, and Metalloids SCIENCE 7 KRIS ANN MAE Y. BONILLA SUBIC NATIONAL HIGH SCHOOL

2. REVIEW: ___1. Pure Element – only one type of atom present. ___2. Mixture of two elements – two types of uncombined atoms present. ___3. Pure compound – only one type of compound present. ___4. Mixture of two compounds – two types of compounds present. ___5. Mixture of a compound and an element.

3. Column A Column B 1. Hamburger   2. Steam water   3. Pencil lead (Pb)   4. Toothpaste (Na 2 HPO 4 )   5. Spaghetti   6. Pepsi   7. coin   8. Boron   9. Table salt (NaCl)   10. Chicken Soup   Column A lists a substance. In Column B, list whether the substance is an element (E), a compound (C), a Heterogeneous Mixture (HM), or a Solution (S). (Remember a solution is a homogeneous mixture .)

4. Identify the following elements and symbols. Element’s Name Symbol Hydrogen     He   Li Berrylium     C   B Nitrogen     O Flourine     Ne

5. LEARNING GOALS: Describe the properties of typical metals, nonmetals, and metalloids

6. PERIODIC TABLE OF ELEMENTS

7. METALS

8. GROUPS IN PERIODIC TABLE

9. PROPERTIES OF METALS

10. Metals can be found to the left of the “staircase” on the periodic table. Almost all solid except for Mercury (Hg) (liquid at room temperature) Good conductors of heat and electricity They reflect light (shiny, luster

11. Malleable –can be hammered

12. Ductile- able to be drawn out into a thin wire

13. ELECTRICAL AND HEAT CONDUCTIVITY

14. The atoms of metals generally have 1-3 valence electrons. In chemical reactions, metals tend to give up electrons easily. When metals combine with nonmetals, the atoms tend to lose electrons to the atoms of nonmetals, forming ionic bonds. Metallic bonding : positively charged metallic ions are surrounded by a cloud of electrons. The outer-level electrons are not tightly held to the nucleus and can move freely among the charged ions.

15. HOW DO METALS REACT WITH ACID?   When an acid reacts with metal, salt and hydrogen gas are produced.

16. NONMETALS

17. NONMETALS

18. METALLOIDS

19. ASSESSMENT

20. Identify the following as metals, nonmetals, or metalloids using the periodic table 1. silicon 2. fluorine 3. uranium 4. mercury 5. arsenic 6. iridium

21. 1. Most elements are a. metals b. nonmetals c. Metalloids d. semiconductors 2. Most nonmetals are a. Brittle b. metalloids c. good conductors d. shiny 3. Elements that share properties of both metals and nonmetals are called a. metals b. nonmetals c. Metalloids