* *
* *
**

neopages network:homeinfoforumscontact
learnchem.net

*
*
navigation:
*
 home *
*
news
about us
contact us
search site
*
 tutorials *
*
index
submit tutorial
request tutorial
*
 organic chemistry *
*
index
important tables
reactions
*
 practice tests *
*
index
submit practice tests
request practice tests
*
 online quizzes *
*
index
chemistry olympiad test questions
submit quizzes
request quizzes
*
 reference tools *
*
constants
formulas
glossary
periodic table
si units/conversions
thermodynamic data
*

1. Which of these is not an element?
Uranium Plutonium Iron Gold Brass

2. Which of these is a pure substance?
Blood Ocean Brass Wine Table Salt (NaCl)

3. Which of these has a neutral charge?
Protons Neutrons Electrons Quarks None of these

4. Which of these has a negative charge?
Protons Neutrons Electrons Quarks None of these

5. When an element has a different number of neutrons, it is called a/an...
Anomaly Differentiated Mutated Isotope None of these

Name:
E-mail:


Last 15 Challengers
*

news | about us | contact us
tutorials index | organic chemistry | practice tests | online quizzes | reference tools
site copyright (c) 2002 to neopages.com

*
*
newsletter:
newsletter
*
*
*
neopages network:
*
network news:
*