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
B
C
D
by atomic number
alphabetically
oxidation number
by number of atoms
• In the modern periodic table,
the elements are arranged - -
A
B
C
D
by atomic number
alphabetically
oxidation number
by number of atoms
• Which symbol represents an
element with an atomic number
of 6?
A
B
C
D
helium
hydrogen
Carbon
boron
• Which symbol represents an
element with an atomic number
of 6?
A
B
C
D
helium
hydrogen
Carbon
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 H2
B gold
C oxygen
D Water
Which of the following is not
an element?
A H2
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. H20
b. NaCl
c. CO2
d. O2
Which of the following is not a
compound?
a. H20
b. NaCl
c. CO2
d. O2
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
I. dull
II. brittle
III. conductor
IV. non-ductile
Which of the characteristics in the box
above describe nonmetals?
A
B
C
D
I only
I and II only
I, II, and IV only
III only
I. dull
II. brittle
III. conductor
IV. non-ductile
Which of the characteristics in the box
above describe nonmetals?
A
B
C
D
I only
I and II only
I, II, and IV only
III only
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
Chlorine
% of Dissolved Salts in Ocean Water
Sample
55.0%
Sodium
30.6%
Calcium
1.2%
Potassium
1.1%
Sulfur
3.7%
Magnesium
7.7%
Other
0.7%
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!)