Urgent i need this fast. it is timed

Why are the trends and exceptions to the trends in ionization energy observed?

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

All motion is caused by force? true or false