On the period table, the rows are called
question 3 options:

a. periods

b. columns

c. sections

d. groups

Drive down any three characteristic of modern periodic table

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy