Unit 3, Lesson 1-2 Word Scramble
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Term | Definition |
atom | the smallest particle into which an element can be divided and still be the same element |
electron | negatively charged particles |
nucleus | a small, dense center that has a positive charge and is surrounded by moving electrons |
proton | positively charged particles |
neutron | particles with no electric charge |
electron cloud | the region around the nucleus of an atom where electrons are likely to be found |
atomic number | the number of protons in the nucleus |
mass number | the total number of protons and neutrons in an atom's nucleus |
periodic table | arrangement of the elements |
chemical symbol | abbreviation of the chemical's name |
metals | elements that are shiny and conduct heat and electricity well |
nonmetals | poor conductors of heat and electricity |
metalloids | elements that have some properties of metals and some properties of nonmetals |
group | each vertical column of elements on the periodic table |
period | horizontal row of elements |
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