Elements are arranged in groups by similar atomic structure on the periodic table. this allows for an element’s properties to be predicted based on general periodic trends. one of these trends, atomic radius, increases downs group and to the left along a period and can be defined as

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

This drawing shows a human body system. what is the primary function of this body system?

How do you convert 4 mmol of bromobenzene to ml?