10
lesson pretestMultiple Choice

Pretest

Question 10 • Physical Science

Sebastian wants to write the chemical formula for phosphorus tetraoxide. He identifies the chemical symbols as cap p and cap o Which additional step will he take in his process?

Answer
A
write the chemical symbols, in order, as OP
B
add a subscript of 4 after the cap o
C
identify the elements involved as potassium and oxygen
D
use the prefix tetra before oxygen