There are several ways to give an object potential energy. One can move the object against the force of gravity to increase. One can also stretch an object out or put pressure on it.
The last photo because its molecular formula is C3H4.
160.0g
Mass =volume x density = 200.0 mL x 0.8 g/mL= 160.0 g
V²+ = (B)
X³+ = (D)
Y³- = (C)
Z²- = (A)
When an element loses electrons, the element gains a positive charge
When an element gains electrons, the element gains a negative charge
NOTE: Electrons are negative charges
Evaporation can decrease the amount of water. Dust from the surroundings can enter the water. The water can freeze if the surrounding temperature decreases sufficiently.