Answer:
the answer is not correct
A polyatomic ion is a group of elements that has a charge that is not 0. for example the charge of P04 is -3
Here's the numbers
H = +1
Cl = -1
A) Deer
D) Grass
Hope that helps you out (:
Physical properties can be observed or measured without changing the composition of matter. These are properties such as mass, weight, volume, and density. Remember that density is a physical property.