IPC Fall Final Exam Review Part 1

A chemical symbol represents the ____ of an element.

• name
• reaction
• group reaction d. structure  
• structure

A sub atomic particle that moves around the nucleus is a(n) ____.

• electron
• proton
• neutron
• quark

The nucleus of most atoms is composed of

• tightly packed protons
• tightly packed neutrons
• tightly packed protons and neutrons
• loosely connected protons and electrons

A positively charged particle found in the nucleus of the atom.

• electron
• proton
• neutron
• quark

An atom is electrically neutral because

• neutrons balance the protons and electrons.
• nuclear forces stabilize the charges.
• the numbers of protons and electrons are equal.
• the numbers of protons and neutrons are equal. 

The atomic number of oxygen, 8, indicates that there are eight

• protons in the nucleus of an oxygen atom.
• oxygen nuclides
• neutrons outside the oxygen atom's nucleus.
• energy levels in the oxygen atom's nucleus.

The total number of protons and neutrons in the nucleus of an atom is its

• atomic number
• Avogodro constant
• mass number
• number of neutrons

What is the atomic number for aluminum using a periodic table?

• 13
• 14
• 26.98
• 26.9815

An atom of Potassium has 19 protons and 20 neutrons.  What is its mass number?

• 10
• 19
• 39
• 20

A neutral atom of Silicon contains

• 16 electrons
• 28.09 electrons
• 14 electrons
• 38 electrons