What statement best supports the representation of the model below? Hydrogen
-Hydrogen
Oxygen
(Not drawn to scale)
O it is a compound because it has two bonds
O it is a compound because it is made of two different atoms
o it is a mixture because it has two gases
o it is an element because it is water

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical