Building Blocks of Matter

1
Building Blocks of Matter

• Introductory Physical Science

2
Reactions We Have Seen

• Sodium Chlorate Energy ? Oxygen Sodium
  Chloride

What happened to the mass in the test tube?
Decreased!

• Which side of the reaction has simpler
  substances?

The right side (the products)

• What process is occurring?

Decomposition!
3
Reactions We Have Seen (contd)

• Water Energy ? Hydrogen Oxygen

• What happened to the mass in the test tube?

Decreased!

• Which side of the reaction has simpler
  substances?

Right side (the products)

• What process is occurring?

Again Decomposition!
4
Reactions We Have Seen (contd)

• Copper Oxygen Energy? Copper oxide

• What happened to the mass in the crucible?

Increased!

• Which side of the reaction has simpler
  substances?

The left side (the reactants this time!)
What process is occurring?
Synthesis!
5
Indecomposable?

• It seems as though some substances (copper,
  sodium, chlorine, hydrogen, oxygen, ) dont
  decompose!

• Scientists throughout history have always
  sought to determine
  the fundamental building blocks of the world
  around us.

• Substances like copper, sodium, etc. seemed to be
  indecomposable.

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Elements

• A substance that is chemically indecomposable is
  referred to as an element.

• Elements combine with other elements to form
  compounds.

• Compounds can mix with elements or other
  compounds to form mixtures.

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Elements The Building Blocks of Matter
Mixtures
Compounds
Synthesis
Elements