While looking at calcium (ca) on the periodic table, a student needs to find an element with a greater atomic mass in the
same period. where should the student look?
directly up
directly down
directly to the left
directly to the right

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.

Which best describes why nh4+ can form an ionic bond with cl-?

How does a hydroelectric power plant converts energy into energy.