Today is October 3, 2012 You need to finish your review sheet from yesterday ON YOUR OWN! There is no talking for the beginning of class I’m going to walk.

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Presentation transcript:

Today is October 3, 2012 You need to finish your review sheet from yesterday ON YOUR OWN! There is no talking for the beginning of class I’m going to walk around and see what you have done to take a grade so get busy

Give me five properties of METALS Shiny Good Conductor of heat and electricity Ductile Malleable High Melting point

Give me five properties of NONMETALS Dull Poor Conductor of heat and electricity Brittle Low Melting point Half are gases

Give me two examples of Metalloids and tell me properties of Metalloids: Metalloids have properties of both metals and nonmetals Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, Polonium, Astatine

What is the definition of an element? An element is a pure substance that cannot be broken down into smaller substances by ordinary means

What elements are the most important on our earth? (Circle the one that is most important for living things) Nitrogen Oxygen Hydrogen Carbon

What are the two compounds that we have been talking about A LOT? What elements are in those compounds? Salt- Sodium and Chlorine Water- Hydrogen and Oxygen

Give me TWO examples of chemical change: Rusting Burning Toasting Cooking Baking

Give me TWO examples of physical change: Melting Dissolving Boiling Breaking Tearing

Explain what a “State of Matter” Change is.

How does a compound differ from an element?

What TWO elements is the atmosphere made out of? And what percentage? 78% Nitrogen 21% Oxygen

The property of metals that makes them easily pounded or pressed into new shapes is called – a. ductile. b. Bending point c. malleability. d. melting point.

The property of metals that makes them easily pounded or pressed into new shapes is called – a. ductile. b. Bending point c. malleability. d. melting point.

In the modern periodic table, the elements are arranged - - A by atomic number B alphabetically C oxidation number D by number of atoms

In the modern periodic table, the elements are arranged - - A by atomic number B alphabetically C oxidation number D by number of atoms

Which symbol represents an element with an atomic number of 6? A helium B hydrogen C Carbon D boron

Which symbol represents an element with an atomic number of 6? A helium B hydrogen C Carbon D boron

What is the correct chemical symbol for the element Aluminum? A AL B Am C Al D al

What is the correct chemical symbol for the element Aluminum? A AL B Am C Al D al

The simplest pure substances are - - A cells B elements C compounds D symbols

The simplest pure substances are - - A cells B elements C compounds D symbols

Which of the following is not an element? A H 2 B gold C oxygen D Water

Which of the following is not an element? A H 2 B gold C oxygen D Water

Which element found in Earth’s atmosphere is essential for most living things? a. Carbon b. Iron c. Oxygen d. Argon

Which element found in Earth’s atmosphere is essential for most living things? a. Carbon b. Iron c. Oxygen d. Argon

Which of the following is not a compound? a. H 2 0 b. NaCl c. CO 2 d. O 2

Which of the following is not a compound? a. H 2 0 b. NaCl c. CO 2 d. O 2

An element on the periodic table is described as being a solid, shiny, and a poor conductor of heat. This element is most likely: A a metal B a metalloid C a nonmetal D a compound

An element on the periodic table is described as being a solid, shiny, and a poor conductor of heat. This element is most likely: A a metal B a metalloid C a nonmetal D a compound

An element on the periodic table is described as being a brittle, poor conductor and located on the right side of the periodic table. This element is most likely: A a metal B a metalloid C a nonmetal D a compound

An element on the periodic table is described as being a brittle, poor conductor and located on the right side of the periodic table. This element is most likely: A a metal B a metalloid C a nonmetal D a compound

Which of the following is NOT a physical property of metals? A shiny luster B ductile C brittle D good conductors

Which of the following is NOT a physical property of metals? A shiny luster B ductile C brittle D good conductors

About two-thirds of the elements on the periodic table are ______________. A metals B nonmetals C metalloids D in group 3

About two-thirds of the elements on the periodic table are ______________. A metals B nonmetals C metalloids D in group 3

Which of the following is not a compound? a. water b. salt c. gold d. carbon dioxide

Which of the following is not a compound? a. water b. salt c. gold d. carbon dioxide

The property of metals that makes says they can easily be made into wires– a. ductile. b. Bending point c. malleability. d. melting point.

The property of metals that makes says they can easily be made into wires– a. ductile. b. Bending point c. malleability. d. melting point.

Which of the following is NOT a physical property of NONMETALS? A poor conductor B dull C brittle D shiny luster

Which of the following is NOT a physical property of NONMETALS? A poor conductor B dull C brittle D shiny luster

Which of the characteristics in the box above describe nonmetals? A I only B I and II only C I, II, and IV only D III only I. dull II. brittle III. conductor IV. non-ductile

Which of the characteristics in the box above describe nonmetals? A I only B I and II only C I, II, and IV only D III only I. dull II. brittle III. conductor IV. non-ductile

The substances shown in the box above are all made from one group of elements. Where would you find the elements from these substances on the periodic table? A on the left side B on the right side C along the stair step line D mixed throughout the periodic table

The substances shown in the box above are all made from one group of elements. Where would you find the elements from these substances on the periodic table? A on the left side B on the right side C along the stair step line D mixed throughout the periodic table

Which of the following is an example of a chemical change? A grinding salt crystals to a powder B the evaporation of water from a mud puddle C an egg cooking D paper tearing

Which of the following is an example of a chemical change? A grinding salt crystals to a powder B the evaporation of water from a mud puddle C an egg cooking D paper tearing

Which of the following is an example of a physical change? A a bike rusting B water boiling C an egg cooking D paper burning

Which of the following is an example of a physical change? A a bike rusting B water boiling C an egg cooking D paper burning

Element % of Dissolved Salts in Ocean Water Sample Chlorine55.0% Sodium30.6% Calcium1.2% Potassium1.1% Sulfur 3.7% Magnesium7.7% Other0.7% As part of a field investigation at the Ocean Science Institute, Steven analyzed a sample of ocean water. The table above summarizes the relative amounts of dissolved salts found in the sample. What percentage of the dissolved salts are substances other than chlorine and sodium? (that means your have to do some math!)