CHEM 105 CHAPTER 1-5 EXAM QUESTIONS AND ANSWERS

CHEM 105 CHAPTER 1-5 EXAM
QUESTIONS AND ANSWERS



Chemistry - Correct Answers -The study of matter; its composition, structure, properties,
physical state, and energy

Matter - Correct Answers -All material is the universe that occupies space and has
mass

Class of matter: Element - Correct Answers -Entire substance is made of the same
element; example, a solid gold ring

Class of matter: Compound - Correct Answers -Entire substance is made of one
compound; example, a container of H2O

Class of matter: Homogenous Mixture - Correct Answers -A mixture of molecules that
are uniform throughout a given area; example, a solution of salt water

Class of matter: Hetergenous Mixture - Correct Answers -A mixture of molecules that is
not uniform throughout a given area; example, salad dressing

Chemical properties - Correct Answers -How atoms react to other atoms

Nuclide - Correct Answers -Any specific isotope of an element

Atomic number - Correct Answers -Number of protons in any atom of an element

Atomic mass/mass number - Correct Answers -The number of nucleons (protons and
neutrons) in an element

Physical properties - Correct Answers -Properties of a single substance such as mass,
density, shape, color, etc.

Solid - Correct Answers -Definite volume and shape

Liquid - Correct Answers -Definite volume but not shape

Gas/Vapor - Correct Answers -Neither a definite volume nor shape; expands to fit the
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