Isotopes and Radioactive Decay

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Ion

Back

An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Front

Isotope

Back

Variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

Radioactive Decay

Back

The process by which an unstable atomic nucleus loses energy by emitting radiation.

Front

Half-life

Back

The time required for half of the radioactive atoms in a sample to decay.

Front

Specific Heat

Back

The amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

Front

True or False: Ions are always positively charged.

Back

False. Ions can be positively or negatively charged.

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True or False: Isotopes have different atomic numbers.

Back

False. Isotopes have the same atomic number but different mass numbers.

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True or False: Radioactive decay can change one element into another.

Back

True. Radioactive decay can result in the transmutation of elements.

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True or False: Half-life is affected by temperature and pressure.

Back

False. Half-life is a constant property and is not affected by external conditions.

Front

True or False: Specific heat is the same for all substances.

Back

False. Specific heat varies between different substances.