versa. 2. What are the potential benefits and risks in using nuclear tracers in medical diagnosis? 3. What type of nuclear reaction powers our Sun? The type of nuclear reaction that powers the sun is nuclear fusion (hydrogen nucleus and proton). 4. What form of indoor air pollution is the result of naturally occurring radioactive decay? Radon is a form of indoor air pollution resulting from naturally occurring radioactive decay. 5. Why must uranium be enriched in order to be
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The centre is called the nucleus. It is made of tiny particles called protons and neutrons. Electrons circle around the nucleus in clouds, or shells, far from the nucleus. When an atom is in balance, it has the same number of protons and electrons. It can have a different number of neutrons. Electrons stay in their shells because a special force holds them there. Protons and electrons are attracted to each other. We say protons have a positive charge (+) and the electrons have a negative charge (-)
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ability to do work -Metabolism- Chemical reactions in a cell that allows it to use energy -Element- A chemically pure substance that cannot not be broken down -Matter- anything that takes of space -Atom- smallest unit of an element -Proton- positively charged particle inside nucleus -Electron- negatively charged particle around nucleus -Neutron- uncharged particle inside nucleus -Nucleus- core of an atom -Covalent Bond- strong bond from the sharing of electrons between two
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a property of some subatomic particles, which determines their electromagnetic interactions. Electrically charged matter produces and also is influenced by electromagnetic fields. Antimatter is made of essentially of antiprotons, which is a normal proton with the electrical and magnetic charge reversed. Antimatter is affected by gravity. (NASA 2). Additionally when “antimatter and normal matter collide they release energy” (NASA 5). To make antimatter, scientists must get a high velocity electron
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are the building blocks of the universe. Atoms are so small that millions of them would fit on the head of a pin. Atoms are made of even smaller particles. The center of an atom is called the nucleus. It is made of particles called protons and neutrons. The protons and neutrons are very small, but electrons are much, much smaller. Electrons spin around the nucleus in shells a great distance from the nucleus. If the nucleus were the size of a tennis ball, the atom would be the size of the Empire
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1. Name the three subatomic particles and describe their location. Proton, Neutrons, Electrons and still other particles that are smaller than atoms are called subatomic particles. Proton, Neutrons are located at the center of an atom. The electrons are in motion at some distance from the nucleus. 2. Does the law of definite proportions apply to mixtures? Explain. Yes. This idea to apply to all matter – gases, solids and liquids 3. Does the law of definite proportions apply to elements? Explain
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The theory of atoms and atomic history have been changing throughout history. The atomic theory has had many factors changed and restated to go along with the more recent discoveries. Today, we know all atoms have electrons, protons, neutrons, and of course, the nucleus. Those are a few of the fundamental terms we use to understand the basic structure of an atom. Those are just the simple building blocks of an atom. There is also a electron cloud that is around the nucleus. It was thought to have
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COMPANY BACKGROUND McDonald's is the world's leading global food service retailer with over 36,000 locations serving approximately 69 million customers in over 100 countries each day. More than 80% of McDonald's restaurants worldwide are owned and operated by independent local business men and women. Overall vision is for McDonald's to become a modern, progressive burger company delivering a contemporary customer experience. Modern is about getting the brand to where we need to be today and
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cantik di mata cantik di hati 6 tip Wajah kusam Kembali ceria Kesibukan dengan urusan kerja mahupun rumah tangga sering kali menyebabkan wanita kurang tidur dan rehat yang mencukupi.Sekali gus menyebabkan wajah tampak kusam dan tidak bermaya. B agi wanita berkerjaya,pastinya hal ini mahu dihindarkan kerana tidak mahu tampil dengan wajah yang kurang ceria terutama ketika berhadapan orang ramai.Beberapa
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Science Assessment Task 3 – Script Technetium-99m An isotope of an element has the same number of protons but has a different number of neutrons. A radioisotope is an isotope that’s nuclei is unstable and therefore emits particles or rays of radiation. An example of a radioisotope is Technetium-99m. Technetium-99m emits gamma radiation. Gamma radiation is the highest frequency electromagnetic radiation that nuclei can emit, but don’t be scared just yet, because only such a small amount of radiation
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