# What is the term for the process that occurs when an atom of an element spontaneously breaks apart to create an atom of a different element and the release of energy as radiation or particles?

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## What is the term for the process that occurs when an atom of an element spontaneously breaks apart to create an atom of a different element and the release of energy as radiation or particles?

When an atom splits into two parts, either through natural decay or when instigated within a lab, it releases energy. This process is known as fission.

## What is radioactive decay process?

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation.

## What happens to an atom during radioactive decay?

When radioactive atoms decay, they release energy in the form of ionizing radiation (alpha particles, beta particles and/or gamma rays). The energy is called ionizing radiation because it has enough energy to knock tightly bound electrons from an atom’s orbit. This causes the atom to become a charged ion.

## What is the formula to solve for the rate of radioactive decay?

Calculations Using the First Order Rate Equation: r = k[N] The rate of decay is often referred to as the activity of the isotope and is often measured in Curies (Ci), one curie = 3.700 x 1010 atoms that decay/second.

## Is radioactive decay first order?

Because radioactive decay is a first-order process, the time required for half of the nuclei in any sample of a radioactive isotope to decay is a constant, called the half-life of the isotope. Radioactive decay is a first-order process.

## What is growth decay rate?

Exponential Decay: The growth “rate” (r) is determined as b = 1 + r. The decay “rate” (r) is determined as b = 1 – r. a = initial value (the amount before measuring growth or decay) r = growth or decay rate (most often represented as a percentage and expressed as a decimal) x = number of time intervals that have passed.

## How do you know if a function is growing or decaying?

When a > 0 and b > 1, the function is an exponential growth function. When a > 0 and 0 < b < 1, the function is an exponential decay function.

## Why is Half Life exponential decay?

Half-Life. We now turn to exponential decay. One of the common terms associated with exponential decay, as stated above, is half-life, the length of time it takes an exponentially decaying quantity to decrease to half its original amount.

## What is half life in terms of radioactive decay?

Half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive …

## What is the scientific definition of Half Life?

1 : the time required for half of something to undergo a process: such as. a : the time required for half of the atoms of a radioactive substance to become disintegrated.

## What does half life mean in drugs?

What is a drug’s half-life? The half-life of a drug is the time it takes for the amount of a drug’s active substance in your body to reduce by half. This depends on how the body processes and gets rid of the drug.

## Why is half life important?

Understanding the concept of half-life is useful for determining excretion rates as well as steady-state concentrations for any specific drug. Different drugs have different half-lives; however, they all follow this rule: after one half-life has passed, 50% of the initial drug amount is removed from the body.