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6th grade

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
The smallest unit of an element that maintains the properties of that element.   Atom  
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a substance that cannot be seperated or broken down into simpler substances by chemical means   Element  
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a subatomic particle that has a positive charge and that is found in the nucleus of an atom   proton  
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a subatomic particle that has no charge and that is found in the nucleus of an atom   neutron  
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a subatomic particle that has a negative charge.   electron  
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in physical science, an atom's central region, which is made up of protons and neutrons   nucleus  
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a charged particle that forms when an atom or a group of atoms gains or loses one or more electrons   ion  
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How many electrons are in each atom?   The atomic number tells us.  
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How do we find the number of neutrons?   Round the atomic mass to the nearest whole number, then subtract the atomic numbers.  
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First enery level of an atom can have _______ electrons?   two  
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The second energy level of an atom can have ________ electrons   eight  
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The outermost energy level of an atom can have _______ electrons.   eight  
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How many protons are in an atom?   The atomic number tells us.  
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