The smallest particle of an element that retains the characteristics of the element is a(n) .

Imaginary element has two naturally occurring isotopes. One of them has atomic mass of 60. amu and abundance 60%, and other one has atomic mass of 65. amu and abundance 40%. What is atomic mass of this imaginary element? Show your calculations.

Which of the following properties describes a solid? Check all.

What age, in Peaks of Maturation in Pediatrics, is there an accelerated frontal executive system development?  

Visual deficits are usually not present in a case involving brain injury.

At what age, in Peaks of Maturation in pediatrics, does frontal executive function mature?

Brain imaging is always helpful in diagnosing the severity brain injury.

AHT is formerly known as ___________. (1-3 WORDS)

Consider the following brain image.   What region of the brain is believed to be most involved in a wide variety of functions including motivation for food, water and sex, memory encoding, and fear responses?  This area is also believed to house the primary reward centers in the brain. 

During final exams week, Maria is only getting 2 or 3 hours of sleep each night due to staying up late preparing for exams.  What change in Maria’s sleep cycle might we predict for a few nights when she gets back to her normal amount of nightly sleep?