1. Convert 48.0oF to kelvin.

2. How many neutrons in carbon-13?
13 0 1 7 6

3. Which of these can an element have a different number of?
Protons Neutrons Electrons All of these None of these

4. Which of these has 23 protons?
Scandium Titanium Vanadium Chromium None of these

5. How many significant figures: 480
1 2 3 4 5

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
*
*