PLEASE HELP !! How is the chemical bonding between atoms of magnesium (Mg) different from the chemical bonding within a crystal of aluminum iodide (Allz)?
A. Freely moving electrons hold the aluminum and iodine atoms
together, and the attraction of opposite charges holds the
magnesium atoms together.
B. The attraction of like charges holds the magnesium atoms
together, and shared electrons hold the aluminum and iodine
atoms together
C. The attraction of like charges holds the aluminum and iodine
atoms together, and the sharing of electrons holds the magnesium
atoms together.
D. Freely moving electrons hold the magnesium atoms together, and
the attraction of opposite charges holds the aluminum and iodine
atoms together.

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light

Five renewable energy resources are wind, sunlight, moving water and geothermal energy. question 2 options: true false