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Chemistry Chapter 2 -- Matter -- Completion



Completion
Complete each statement.
 

 1. 

Sound is not made of matter because it has no ____________________.
 

 

 2. 

A substance that is made of atoms of more than one type chemically bound together is called a(n) ____________________.
 

 

 3. 

Every chemical compound is unique and different from the ____________________ it contains.
 

 

 4. 

One molecule of hydrochloric acid (HCl) contains ____________________ atom(s).
 

 

 5. 

When two or more pure substances are blended together, the result is a(n) ____________________.
 

 

 6. 

A ____________________ property describes how a substance acts when it reacts with other substances.
 

 

 7. 

For any pure substance, the boiling point and melting point will always remain ____________________.
 

 

 8. 

The density of ____________________ is 1.00 g/cm3.
 

 

 9. 

Flammability is a chemical property that tells whether a substance reacts in the presence of ____________________.
 

 

 10. 

We inhale oxygen and exhale carbon dioxide as a result of a ____________________ change in our bodies.
 

 

 11. 

A physical change differs from a chemical change in that ______________________________ are formed.
 

 

 12. 

Copper is used to make electric wire because it is a good ____________________.
 

 

 13. 

A molecule is the smallest unit of a substance that retains the ____________________ of that substance.
 

 

 14. 

The chemical symbol O stands for the element ____________________.
 

 

 15. 

The chemical formula for a chlorine molecule, which contains two chlorine (Cl) atoms, is ____________________.
 

 

 16. 

Two or more liquids that can dissolve into each other are referred to as ____________________.
 

 

 17. 

Tooth fillings are often made of gold or porcelain because those materials are not ____________________.
 

 

 18. 

Ice floats in water because it is ____________________ than water.
 

 

 19. 

Wheat ground into flour is an example of a(n) ____________________ change.
 

 

 20. 

Aluminum, oxygen, and carbon are each ____________________.
 

 

 21. 

Grinding quartz crystals down to produce sand causes a(n) ____________________ change.
 

 

 22. 

The smallest particle of oxygen that behaves like oxygen is an oxygen ____________________.
 

 

 23. 

Each molecule of iron oxide (Fe2O3) contains ____________________ iron atom(s).
 

 

 24. 

A mixture of flour and water is called a(n) _________________________ mixture because the substances do not dissolve.
 

 

 25. 

The ____________________ of a substance is defined as its mass divided by its volume.
 

 

 26. 

A chemical change is a change in the ____________________ of a substance.
 

 

 27. 

A change in color during a reaction is often a sign that a(n) ____________________ change has occurred.
 

 

 28. 

The components of a(n) ____________________ can be separated because they are not chemically combined.
 

 

 29. 

Gold is usually found in a pure form in nature because it is not ____________________.