1) which of these is a pure substance a) element b) compound c) mixture d) both element and compound 2) which of these has a set ration a) element b) compound c) mixture d) both compound and mixture 3) which is not true for a mixture a) some can be seen b) can be made the same element c) is made of elements and compounds d) is not a pure substance 4) which is not true for a compound a) is made up of 2 or more elements b) has a set ration c) is a pure substance d) has the same types of atoms 5) which is not true for an element a) can be a molecule b) is a pure substance c) has all the same types of atoms d) has a set ration 6) which is true a) only protons are found in the nucleus b) protons and electrons are found in the nucleus c) protons and neutrons are found in the nucleus  d) protons are found outside of the nucleus 7) what is found on the periodic table a) elements b) compounds c) both elements and compounds 8) what is the smallest part of an element a) atom b) molecule  c) nucleus  d) electron 9) what is the smallest part of a compound a) atom b) molecule c) proton d) neutron 10) what charge does a proton have a) no charge b) negative c) positive 11) what charge does an electron have a) positive b) negative c) no charge 12) what charge does a neutron have a) negative b) no charge c) positive

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