Semester 1 Review

Experiments and investigations must be ____

• approved
• unreproduceable
• repeatable
• accepted

A prediction about a problem that can be tested is a(n) ____.

• hypothesis
• independent variable
• dependent variable
• control

When designing an experiment, the first steps are to ____.

• draw conclusions/report results
• recognize a problem/ask a question
• form a hypothesis
• test a hypothesis

 A cubic centimeter can be expressed as ____.

• ccm
• cm³ or cc
• ct
• ccm³

How many atoms of calcium are in a unit of calcium phosphate whose formula is Ca₃(PO₄)₂?

• one
• two
• three
• four

 In general, nonmetals are ____.

• good conductors of electricity
• good conductors of heat
• malleble and ductile
• gases at room temperature

Most of the mass of an atom is found in its ____.

• nucleus
• atomic number
• electron cloud
• mass number

The measure of the average kinetic energy of the particles of a substance is the ____.

• temperature
• heat
• thermal energy
• kinetic energy

The freezing point of a substance is ____ the melting point of the same substance.

• greater than
• less than
• equal to
• unrelated to

The freezing point of a substance is ____ the melting point of the same substance.

• greater than
• less than
• equal to
• unrelated to