On topographic maps, contour lines that are close together indicate O A. flat land
B. gentle slopes
C. river valleys
D. steep slopes

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

The appropriate concentration for an iodine sanitizer is

Name 3 types of energy you see being used as you look around a classroom