What is an atom according to Modern understanding? Select the most accurate response. O A solid, divisible particle that is the building block of matter.
O A solid, indivisible particle that is the building block of matter.
O The smallest particle of matter that retains the properties of that element.
O The smallest particle of matter that retains the properties of that element and is solid and indivisible

The answer is A.

The question is a bit tricky

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.