Subscript? Is that a language?
What is the chemical formula for water?
H2O
A polar bond shares electrons...
Unequally
What is the name of the family in group 1?
Alkali metals
How many electrons are in the first energy level?
2
What is the valence number of hydrogen?
1
What elements are there in this compound? How many atoms of each element are there?
HNO3
Hydrogen - 1
Nitrogen - 1
Oxygen - 3
A nonpolar shares electrons...
Equally
What is the name of the family in group 17?
Halogens
Why are the orbits of planets and electrons different?
Planets = predictable
Electrons = unpredictable
What is the valence number of chlorine?
7
What elements are there in this compound? How many atoms of each element are there?
C6H12O6
Carbon - 6
Hydrogen - 12
Oxygen - 6
Write the ratio of different elements in glucose (simplify):
C6H12O6
1:2:1
Which group has elements that have stable outer energy levels?
18
Write the electron dot diagram for:
H-
H
What is the valence number?
The number of electrons in the outer ring
Write the chemical formula for sulfuric acid.
(2 hydrogen, 1 sulfur, 4 oxygen)
What is the electronegativity of ionic bonds?
> 2.0
Which family of elements used to be known as the inert gases? Why did the name change?
Noble gases. They can react.
Combine these formulas:
NH4+ & NO3-
NH4NO3
Combine these formulas:
Sn2+ & SO42-
SnSO4
Write the chemical formula for Sodium Chloride.
(Table salt)
NaCl
What is the electronegativity of nonpolar bonds?
< .4
What is the maximum number of electrons in the fourth energy level?
18
Combine these formulas:
Al3+ & SO42-
Al2(SO4)3
Combine these formulas:
Mg2+ & PO43-
Mg3(PO4)2