Use the drop-down menus to complete each sentence.
elements in the same have the same number of valence electrons.
elements in the same have the same number of electron shells.
metallic elements become reactive as you move left to right in a period.
metallic elements become reactive as you move top to bottom in a group.
Answers: 3
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Omg imgonnafailnfiedkla use complete sentences to explain how the mass of hydrogen is conserved during cellular respiration.
Answers: 1
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Which of the following methods uses the decay of atomic particles in an object to find its exact age? a. fossil dating b. geologic dating c. radioactive dating d. relative dating
Answers: 1
Use the drop-down menus to complete each sentence.
elements in the same have the same number...
elements in the same have the same number...
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