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Questions and Answers
Which of the following statements about atomic theory is true?
Which of the following statements about atomic theory is true?
- Atoms can be created and destroyed in chemical reactions.
- Chemical compounds are formed by atoms in fractional ratios.
- Chemical elements consist of very small particles called atoms. (correct)
- All atoms of a specific element are different.
All atoms of a specific element are identical.
All atoms of a specific element are identical.
True (A)
The ______ discovered the nucleus of the atom.
The ______ discovered the nucleus of the atom.
Rutherford
What is the charge of a neutron?
What is the charge of a neutron?
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What are valence electrons?
What are valence electrons?
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What is the effect of increasing nuclear charge on atomic radius?
What is the effect of increasing nuclear charge on atomic radius?
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Which group contains the alkaline earth metals?
Which group contains the alkaline earth metals?
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Match the following scientists with their discoveries:
Match the following scientists with their discoveries:
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What is ionization energy?
What is ionization energy?
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Isotopes contain equal numbers of protons but different numbers of electrons.
Isotopes contain equal numbers of protons but different numbers of electrons.
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