Question 1
• 2H2 + O2
H2O
What coefficient is
needed to balance this
equation? Explain
Question 2
• 5CH4 + 3O2
CO2 + 3H2 O
How many
molecules are on
the reactants side?
Explain
Question 3
Write this down as a
chemical equation.
Question 4
•Explain the Law of
Conservation of
Mass.
Question 5
Why is this
chemical equation
balanced?
Question 6
•Why is the
atomic number
of lead 82?
Question 7
•Why does the
Chlorine atom
have 18 neutrons?
Question 8
•How many atoms
are in CO ?
2
Question 9
• If an atom is balanced, and it has
an atomic number of 26 and an
atomic mass of 55.847. How
many electrons are in this atom.
Question 10
•Calculate how
many neutrons
Argon has.
Question 11
•What period is
Calcium on?
Question 12
•Why is Hydrogen more
reactive than Helium?
Question 13
•How do you
know Zirconium
is a metal?
Question 14
•What are the two names
of the vertical columns
on the Periodic Table?
Question 15
What is this
number called?
Question 16
Question 17
Question 18
Question 19
Question 20
Question 21
Question 22
Question 23
Question 24
Question 25
Question 26
Question 27
Question 28
Question 29
Question 30