Which of the following is an ionic compound?
O CO2
O H2O
O CH4
OKCI

If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. true false

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.