1) Name THREE personalities' (philosophers and/or scientists) who conceived ideas about atoms. (2) List TWO discoveries which led to inventions that helped later scientists to see atoms.
(3) Mention ONE thing that amazes you about how we 'see' atoms.

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

Listenbase your answer to the question on the information below.nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body.cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment.which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61