Model Simple Molecules Practice Test

In the model shown, methane has one carbon atom (C) drawn as a black circle in the center. Four hydrogen atoms (H) are drawn as small white circles around it, and each H is connected to the C by a single line (bond). Which statement correctly describes the bonding in this molecule?

In the particle model of a water molecule, the oxygen atom (O) is shown as a larger red circle in the center, and two hydrogen atoms (H) are shown as smaller white circles. Each H is connected to the O by a single line (bond), forming one bent H–O–H molecule. Which chemical formula matches this model?