Chemical or Mechanical
what change occurs during photosynthesis
Chemical change
What element has the most ionization energy?
helium
what is the formula for water
H2O
If something melts what type of change is that?
Physical
what element has the most electronegativity
francium
Na2O?
( the name)
sodium monoxide/ oxide
or sodium chloride
There is rust on a pot, what type of change occured?
chemical
What number is 11 on the periodic table
Sodium
SO2?
(whats the name)
If I burn something, what type of change is it?
Chemical
What number is 19 on the periodic table
Potassium
what is the formula for glucose
C6H12O6
burning a candle is an example of what type of change
BOTH!
what number is 35 on the periodic table
Bromine
NaOH?
(The name)
Sodium Hydroxide