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physics vocabulary D

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What is a compound?   a substance made of elements of different kinds combined in a fixed proportion.  
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What is the Atomic Number?   The number of protons in the nucleus of an atom.  
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What are the types of nucleons?   Protons and neutrons.  
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How is an ion created?   When an atom gives up electrons and becomes elecrically charged.  
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What are the phases of matter?   Solid, liquid, gas, plasma  
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How many elements are known to man kind today?   Around 115  
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Only about 90 or so elements are found on earth. Where can the rest be found?   In labratories.  
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What is Brownian motion?   The random movement of atoms and particles.  
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Where are the electrons found in the atom?   In the outer shells of the atom.  
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What has more mass, an electron or a proton   A proton. An electron is a tiny tiny spec compared to the proton  
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