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Physics Questions

Physics Questions

What is atomic weight?

What is atomic weight? atomic weight The nuclei of atoms also contain neutrons, which help hold the nucleus together. A neutron has no electrical charge and is slightly more massive than a proton. Because a neutron can decay into a proton plus an electron (the essence of beta decay), it is sometimes helpful to ...

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What is atomic number?

What is atomic number? atomic number An atom may be visualized as a miniature solar system, with a large central nucleus orbited by small electrons. The bonding capacity of an atom is determined by the electrons. For example, atoms that in their normal state have one electron are hydrogen atoms and will ...

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What is an element?

What is an element? element Chemical behavior is what originally led scientists to classify matter into various elements. Chemical behavior is the ability of an atom to combine with other atoms. In more technical terms, chemical behavior depends upon the type and number of the chemical bondsan atom can form with other atoms. In classroom kits for ...

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How can radioactivity be caused artificially?

How can radioactivity be caused artificially? Radioactivity can occur both naturally and through human intervention. An example of artificially induced radioactivity is neutron activation. A neutron fired into a nucleus can cause nuclear fission (the splitting of atoms). This is the basic concept behind the atomic bomb. Neutron activation is also the underlying ...

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What is radioactive half-life?

What is radioactive half-life? radioactive half-life Being unstable does not lead an atomic nucleus to emit radiation immediately. Instead, the probability of an atom disintegrating is constant, as if unstable nuclei continuously participate in a sort of lottery, with random drawings to decide which atom will next emit radiation and disintegrate ...

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How is radioactivity measured?

How is radioactivity measured? Radioactivity is a physical, not a biological, phenomenon. Simply stated, the radioactivit-y of a sample can be measured by counting how many atoms are spontaneously decaying each second. This can be done with instruments designed to detect the particular type of radiation emitted with each “decay” or disintegration. The ...

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How do Magnets Work? :Magnetism

How do Magnets Work? Magnetism is a property of materials that makes them experience a force in a magnetic field. But what makes a metal magnetic? It is all down to unpaired electrons: moving electrons create magnetism due to their magnetic charge, but in most atoms electrons are paired and ...

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What is Gravity?

What is Gravity? Gravity is one of the four fundamental forces that apply in our universe: Gravit-y Electromagnetism Weak Nuclear Force Strong Nuclear Force Gravity is the force exerted by anything that has mass. Even sub-atomic particles exert a gravitational pull on nearby objects. Isaac Newton proved that objects with ...

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