the periodic table was developed in order to group and organize elements with similar physical and chemical properties.

elements such as fluorine, chlorine, and iodine all are very reactive and only need one more electron to fill their outer shells. which of these best describes this family of elements?
a) halogens
b) noble gases
c) alkali metals
d) alkaline earth metals

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

Using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.