Made for my Master's Class

1. By Tim Maher

2.  A pure substance.
 About 110 different elements.
 All matter is made of one or more elements.
 They have specific properties.

3. Oxygen Copper Sulfur
O Cu S
Douglas, Kevin, 2008
Properties Properties Properties
-Color: colorless -Color: brown orange -Color: yellow
-odorless -Bendy -stinky
-flammable -metal -solid powder at room temp
-gas at room temp -conducts electricity
-solid at room temp

4. What is this?
This is a mixture of elements.
Why?
Douglas, Kevin, 2008
Each element (substance) keeps its
own properties. Because of that, they
can be separated.

5. Each element (substance) keeps its own
properties. Because of that, they can be
separated.
Douglas, Kevin, 2008
Copper Oxygen Sulfur
Cu O S
Properties Properties Properties
-Color: brown orange -Color: colorless -Color: yellow
-Bendy -odorless -stinky
-metal -flammable -solid powder at room
-conducts electricity -gas at room temp temp
-solid at room temp

6. Compound
CuSO4 Does copper sulfate
have the properties of
Copper sulfate has copper, sulfur and
the elements copper oxygen?
(Cu), sulfur (S) and
oxygen (O) bonded
NOOOOO!!!!!
together.
Douglas, Kevin, 2008
Copper Sulfate
Properties
-Color: blue
-brittle
-not a metal
-does not conduct electricity
-solid at room temp
-poisonous

7. Compound
•A pure substance.
•Made of 2 or more elements chemically.
bonded together.
•A compound has different properties than
the elements that make it up.
•NOT A MIXTURE!!!!!!!!!

8. Molecule
A molecule is formed when two or more atoms are
chemically bonded together.
All compounds are molecules but not all molecules
are compounds.

9. Compound, Molecule or Single Element?
Na
•Single element
Why?
•Na is the symbol for the element sodium (Na).
Sodium cannot be broken down into any other
chemical by physical or chemical means.

10. Compound, Molecule or Single Element?
H 2O
 Molecule and compound
Why?
 There are 2 hydrogen (H) atoms and 1 oxygen (O) atom
chemically bonded together.
 2 elements are bonded together.

11. Compound, Molecule or Single Element?
H2
 Molecule
Why?
 There are 2 hydrogen (H) atoms chemically bonded
together.
 Only one element is present.

12. Compound, Molecule or Single Element?
CaCO3
 Molecule and compound
Why?
 There is 1 calcium (Ca) atom, 1 carbon (C) atom, and 3
oxygen (O) atoms chemically bonded together.
 3 elements are bonded together.

13. Compound, Molecule or Single Element?
O2
 Molecule
Why?
 There are 2 oxygen (O) atoms chemically bonded
together.
 Only one element is present.

14. Compound, Molecule or Single Element?
Mg
 Single element
Why?
 Mg is the symbol for the element magnesium (Mg).
Magnesium cannot be broken down into any other
chemical by physical or chemical means.

15. Compound, Molecule or Single Element?
F2
 Molecule
Why?
 There are 2 fluorine (F) atoms chemically bonded
together.
 Only one element is present.

16. Compound, Molecule or Single Element?
H2SO4
 Molecule and compound
Why?
 There are 2 hydrogen (H) atoms, 1 Sulfur(S) atom, and 4
oxygen (O) atoms chemically bonded together
 3 elements are bonded together.

17. Bibliography
–Davis, Raymond E. Modern Chemistry. Orlando, FL: Holt,
Rinehart and Winston, 2009.
Photos
–Douglas, Kevin, 2008