Exam 1: Atomic Structure

What type of current flows in only one direction?

What is the maximum number of valence electrons in an atom?

What force is demonstrated in objects with unlike charges?

What force is demonstrated in objects with like charges?

Producing electricity from light involves the use of particles called .

The theory stating that current flow is produced when an electron from one atom knocks electrons of another atom out of orbit is generally called the theory.

Electrical current is the flow of .

What are the three principle parts of an atom?

What part of an atom has a positive charge?

An insulator is a material containing valence electrons.

Direct current is described as .

What type of current reverses its direction of flow at regular intervals?

The valence shell of an atom is the shell.

The atomic number of an element is the number of in the nucleus.

Matter has mass and occupies space.

The Greeks were the first to discover electricity about years ago.

A basic law of physics states that like charges and opposite charges .

The nucleus of an atom contains .

What is the most common method of producing electricity?

What part of an atom has a negative charge?