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Question and answer
Q: Why are reactions that emit alpha particles generally considered more safe than those that emit beta particles? Beta particles emit gamma rays. Alpha particles have no charge. Beta particles
travel at a very low speed. Alpha particles can be blocked very easily.
A: A) Beta particles emit gamma
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Original conversation
User: Why do protons stay together in the nucleus rather than repel each other? Electrons in surrounding atoms cancel the repulsive forces between protons. Electrostatic forces between protons and neutrons hold the nucleus together. Nuclear forces overcome electrostatic forces between protons in the nucleus. Neutrons surround protons and keep them far enough apart to prevent repulsion.

User: Why are reactions that emit alpha particles generally considered more safe than those that emit beta particles? Beta particles emit gamma rays. Alpha particles have no charge. Beta particles travel at a very low speed. Alpha particles can be blocked very easily.

Weegy: A) Beta particles emit gamma
rio8408|Points 400|

User: Why do chemical reactions not produce radioactive particles? Chemical reactions make the nuclei of atoms more stable. Chemical reactions only release gamma rays. Only electrons are involved in chemical reactions. Mass is not conserved in chemical reactions.

Weegy: A) Chemical reactions make the nuclei of atoms more stable.
rio8408|Points 400|

User: From an ethical standpoint, which best describes why new biotechnology products should be tested extensively before they are allowed to be used? There can be unintended consequences to many new biotechnology products. Many new products end up being more expensive than they appear to be. Biotechnology products tend to stop working after a few years. There are usually no benefits to the products of biotechnology.

Weegy: Biotechnology products tend to stop working after a few years
naval_heda|Points 93|

User: In an experiment, a student needs to know the mass of four different objects: a shoe, piece of paper, book, and a tissue. Which of the following units of measurement should the student use? milligram ounce gram kilogram

User: A student measures the concentration of the product of a reaction over time. Which type of graph would best show the change in concentration over time? line graph circle graph box and whisper plot histogram

User: Why are scientific journals considered more reliable sources than web pages for information about science? Web pages are too difficult to make. Scientists never lie about their data. Scientific journals are read and openly criticized by many scientists. Web pages are subject to strict standards of evidence and sources.

Weegy: C) Scientific journals are read and openly criticized by many scientists.
debnjerry|Points 31398|

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Asked 5/20/2012 11:15:47 AM
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