studiz the scienz
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| In 440 B.C He was the first to have the theory of uncutable particles called atoms. Who is he? | Democritus
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| Around 384-322 B.C He denied Democritus' theory. Who is He? | Aristotle
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| He created the atomic theory. 1700's. Who is he? | John Dalton
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| 1897. he makes the Cthode ray tube and predicts there are small particles inside atoms. Who is He? | J.J Thomson
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| 1909. he created the "shooting gallery experiment" and the first model for the atom. Who is He? | Ernest Rutherford
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| 1913. He predicted electrons jukped between levels. Who is he? | Niels Bohr
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| The Modern Theory of The Atom? | Electron clouds, paths of electrons cannot be predicted.
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| Whats an Atom? | Is the smallest particle which an element is formed and divided.
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| Who is the "father" of the periodic table? | Mendeleev
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| The Periodic Law? | Elements are periodec according to their chemical #'s
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| Whats chemical bonding? | The joining of atoms to form new substances
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| This is the Horizontal ROW on theperiodic table | period
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| This is the vertical column on the periodic table | group
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| What is an ionic bond? | When oppositly charged ions bond
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| Whats a chemical reaction? | When one or more substances undergo change.
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| Whats the law of conservation of mass? | Mass can never be created or destroyed
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| What is a synthesis reaction? | when 2 elements form 1
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| Decomposition reaction? | When 1 element breaks to 2
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| Exothermic? | energy goes out
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| Endothermic? | Energy goes in
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| what year was sputnik1 launched? | 1957
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