Chemistry, 26.06.2019 06:30 chaseashley24
Which definition is correct? a) a physical change creates a new substance because bonds are broken or formed b) a chemical change occurs when the substance remains the same but the shape, or other physical characteristics change c) a physical change can happen without changing any characteristics of the substance d) a chemical change produces a new substance by breaking and forming new bonds
Answers: 1
Chemistry, 22.06.2019 20:00
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
Answers: 2
Chemistry, 22.06.2019 23:30
If it is an isoelectronic series select true, if not select false. o2-, s2-, se2-, te2- na+, k+, rb+, cs+ n3-, p3-, as3-, sb3- ag, cd+, sn3+, sb4+ f-, cl-, br-, i- f-, ne, na+, mg2+ s2-, s, s6+
Answers: 1
Chemistry, 23.06.2019 02:00
What is the difference between a substance "getting wet" and "being dissolved" in a liquid at the particulate level?
Answers: 3
Chemistry, 23.06.2019 06:00
Robert leaves a chocolate bar in his car while attending school all day. when he goes to his car in the afternoon, the bat has changed into gooey liquid. what happened to the chocolate bar
Answers: 1
Which definition is correct? a) a physical change creates a new substance because bonds are broken...
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