100 points to right awnser!
to collect quantitative data, scientists use all of the following except

a stopwatch

rulers

scales

descriptive categories

Noble gases are the most reactive elements on the periodic table. a. true b. false

Acurium-245 nucleus is hit with a neutron and changes as shown by the equation. complete the equation by filling in the missing parts. 52

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