Q.1.
Give the formula for oxygen dichloride
Q.2.
Silicon dioxide is the compound in sand. What is its formula?
Q.3.
How many valence electrons are in oxygen, O?
Q.4.
How many electrons should Carbon have around its Lewis dot structure?
Q.5.
What is the formula for diphosphorus pentoxide?
Q.6.
How many valence electrons does nitrogen have?
Q.7.
How many valence electrons does hydrogen have?
Q.8.
Name CCl4
Q.9.
Identify the following compound as ionic or covalent: CF4
Q.10.
Which formula is for phosphorus trichloride?
Q.11.
Write the formula for: dihydrogen monoxide
Q.12.
What is graphene?
Q.13.
Name the following: As2O3 ( Diarsenic Trioxide )
Q.14.
Name the following: PCl5 ( Phosphorus Pentafluoride )
Q.15.
If a you saw the following, K+; what does it tell you about the the ion.
Q.16.
Are the atoms more stable when they are bonded together or when they are apart?
Q.17.
A(n) _________ is an ion with a positive (+) charge.
Q.18.
Fluorine (F₂) is a(n) _________________ molecule because the valence electrons are shared equally between the two fluorine atoms.
Q.19.
When two atoms share electrons, a chemical bond is formed. This type of bond is called:
Q.20.
Which of these are an ion?