Which element has the same number of valence electrons as bromine (Br)? (1 point)
O selenium (Se)
O potassium (K)
O krypton (Kr)
O chlorine (CI)

Alice added sodium chloride to water and stirred the water for several minutes. alice is most likely trying to demonstrate that ionic compounds a. are hard. b. can dissolve. c. are clear. d. can melt.

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.