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10 Cards in this Set
- Front
- Back
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What is the realtionship between subatomic particles in any neutral atom?
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# protons = # electrons
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Compare the masses of subatomic particles
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mass of a proton roughly equals the mass if a neutron. Electrons are more smaller
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What gases is produced when a metallic chlorate decomposes?
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O2
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What is prodeuced in a synthesis reaction involing a nommetal oxide and water?
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acid
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What gas is produced when a metal carbonate is decomposed?
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CO2
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wHAT GAS is produced when an active metal replaces H from and acid in a single replacemetn reaction?
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H2
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RUTHERford was given credit for discovering the ________
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NUCLEUS
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The half life of a radioactive substance is 2 minutes. What fraction of the original material remains after 8 minutes?
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1/16
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HOW Many half-lives are required for three--fourth of the nuclei of one isotope in a sample to decay?
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2
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What the purpose of a nuclear reactor?
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to absorb neutrons and slow or stop a fission chain reaction
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