(03.02 MC) What happens when the compound CaO is formed? (5 points) Oxygen transfers two electrons to calcium. Oxygen receives two electrons from calcium. Calcium forms an ion with −1 charge; oxygen forms an ion with +1 charge. Calcium forms an ion with +1 charge; oxygen forms an ion with −1 charge.

What is the volume of the fluid in the graduated cylinder with accuracy and measured to the correct degree of precision? 41.2 ml 42.0 ml 41.23 ml 41.89 ml

Acurium-245 nucleus is hit with a neutron and changes as shown by the equation. complete the equation by filling in the missing parts. 52

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.