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| Mendeleev's contribution to chemistry was |
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| Organazing the elements in the periodic table |
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| an atomic particle with an atomic mass of 0 and a negatuve charge is called a/an |
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| A vertical column in the periodic table is called a |
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| ________ is an element that would have similar properties to those of magnesium |
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| alaki earth metals are in group |
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| how many electrons in the 3rd energy level or shell? |
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| what is the atomic mass of n atom with and atomic number of 8 and a nucleus that countains 8 protons and 8 neutrons |
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| what element has an atomic number of 8, a nucleus with 8 protons, 8 neutrons, and 8 electrons |
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| which element has the greatest number of protons in its nucleus |
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the noble gasses are
a.)stable
b.) in group 18
c.)include argon and helium
d.) all of them |
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metals:
a.) have high melting and boiling points
b.) are ductile and calleable
c.) conduct electricity
d.) all of these |
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| the number of shells that an atom has correspondsnto an element's |
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| on the periodic table the metalloids are located where |
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| will magnesium gain or lose electrons? |
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| the first step in the scientific meathod is |
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| identify a question or problem |
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true or false:
electricity is matter |
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| matter that has a definate shape and volume is a |
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| the process of going to a liquid phase from a solid phase is called |
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| as matter is heated the particles |
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| a new substance is formed as a reaction to a |
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| a chemical change is often called a |
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| the transfer of electrons occur during |
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| the sharing of electrons occur during |
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| what part of an atom is involved in chemical bonding? |
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| the most pentatrating type of radiation is the |
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| negatively charged particles emitted from a nucleus at high speed are |
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| each element with an atomic number greater than 84 is |
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| the process by wich a nuclei having low masses are united to form a nuclei with a larger mass |
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