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Chemistry

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Ciara Parker

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Cards in this guide (13)
Atoms with certain characteristics are radioactive Which is least likely to be radioactive

all atoms with an atomic number under 40

Cesium-133 has an atomic number of 55 It has neutrons

It has 78 neutrons.

Which are true of gamma radiation

It usually occurs with other types of radioactive decay, It has no charge.

Which is are used in nuclear reactors to absorb neutrons

control rods

What is the difference between hydrogen fuel cells and hydrogen fussion

In fuel cells the hydrogen is oxidised to water. In fusion 2 different isotopes of hydrogen (deuterium and tritium) fuse together to form helium.

In the following decay equation 24 12 Mg is the

daughter element

What is the name of the meridian labeled 0

The name of the meridian that is labeled 0 is the Prime Meridian.

A substance is the time required for half the atoms in a sample of a radioactive isotope to decay

The time it takes for half the sample to decay is called the half-life.

The time it takes for half the sample to decay is called the half-life.

The time it takes for half the sample to decay is called the half-life.

The time it takes for half the sample to decay is called the half-life.

In the following decay equation 90 39 y is the

daughter element

Factor 2p plus 11p plus 5

2p + 11p + 5 = 13p + 5 which does not factor.

If the expression had been 2p2 + 11p + 5 then this can be factored,

2p2 + 11p + 5 = (2p + 1)(p + 5)

What is missing in the following nuclear equation

99 43 tc + 99 44 ru

Can Geothermal pumps can be used for heating or cooling

cooling

I’m a nuclear reaction which of the following must be conserved

Charge

The count of nucleons

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