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What is the best definition of half-life for a radioactive substance?
Wiki User
∙ 11y ago
Verified answer
It indicates how long it takes for the material to decay.
Wiki User
∙ 12y ago
Dilim
Wiki User
∙ 11y agoThe half life of a radioactive element means that half the atoms in that element will decay in that amount of time eg Uranium 238 the most prevalent isotope in Uranium ore has a half life of 4.46 billion years, so half the atoms in any sample of this element will take this length of time to decay.
The half life of something is how long it takes for half of it to disintegrate. e.g. the half life of something is 3 seconds and you have 10 kg of it. after 3 secs you will have 5kg then 2.5 kg then 1.25 kg so on
Wiki User
∙ 11y agoThe time taken for the radioactivity to halve its intensity, starting from any arbitrarily chosen instant.
What is the best definition of the term DRUG?
A narcotic or hallucinogenic substance.
What definition best describes acid?
A substance in a solution that releases hydrogen ions and lowers the pH APEX
What is the best definition of a chemical change?
A change in a substance where one or more new substances form
How do you handle radioactive materials safely?
lead gloves and lead aprons are used.it is best if radioactive samples are handled by remote cntrol and maintained at a distance.
What best describes the enthalpy of formation of a substance?
The energy change that happens when a substance forms from its elements (APEX)
What is the best definition of half life for a radioactive substance?
The time taken for the radioactivity to halve its intensity, starting from any arbitrarily chosen instant.
Is the best definition of radioactive decay?
Radioactive decay is the spontaneous breakdown of a nucleus into smaller parts.
What is the best definition of radioactive decay?
Radioactive decay is the spontaneous breakdown of a nucleus into smaller parts.
What is the best definition of the term DRUG?
A narcotic or hallucinogenic substance.
Which of these is the best definition for histamine?
Histamines: A substance that sends more blood to an injured area.
What is the best definition of chemical change?
A change in a substance where one or more new substances form.
What definition best describes and acid?
A substance in a solution that releases hydrogen ions and lowers the pH APEX
Which definition best describes an acid?
A substance in a solution that releases hydrogen ions and lowers the pH APEX
What definition best describes acid?
A substance in a solution that releases hydrogen ions and lowers the pH APEX
which definition best describes a base?
a substance in a solution that captures hydrogen ions and raises the pH. apex
What is the best known radioactive element?
Probably uranium is the best known radioactive element.
What is the best definition of a chemical change?
A change in a substance where one or more new substances form
