negatively charged and takes up most of the atoms space
Takes up most of the atoms mass and is negatively charged
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Term1/8
How are radioactive isotopes detected
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Definition1/8
They emit radiation as they decay.
That radiation is not generally detectable by human senses (unless it glows in a color range we can see).
We need lab instruments to detect the radiation such as:
Geiger Counter, with Geiger-Mueller (GM) Tube or Probe-A GM tube is a gas-filled device that, when a high voltage is applied, creates an electrical pulse when radiation interacts with the wall or gas in the tube. These pulses are converted to a reading on the instrument meter.
MicroR Meter, with Sodium Iodide Detector-A solid crystal of sodium iodide creates a pulse of light when radiation interacts with it. This pulse of light is converted to an electrical signal by a photomultiplier tube (PMT), which gives a reading on the instrument meter.
Ionization (Ion) Chamber-This is an air-filled chamber with an electrically conductive inner wall and central anode and a relatively low applied voltage. When primary ion pairs are formed in the air volume, from x-ray or gamma radiation interactions in the chamber wall, the central anode collects the electrons and a small current is generated. This in turn is measured by an electrometer circuit and displayed digitally or on an analog meter.
Neutron REM Meter, with Proportional Counter-A boron trifluoride or helium-3 proportional counter tube is a gas-filled device that, when a high voltage is applied, creates an electrical pulse when a neutron radiation interacts with the gas in the tube. The absorption of a neutron in the nucleus of boron-10 or helium-3 causes the prompt emission of a helium-4 nucleus or proton respectively. These charged particles can then cause ionization in the gas, which is collected as an electrical pulse, similar to the GM tube.
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Term1/8
16 Why is the state of matter a physical property and not a chemical property
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Definition1/8
Because in a chemical reaction atoms are rearranged to form new
substances whilst in a physical reaction or change of state the
atoms are only rearranged. :D
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Term1/8
Adaptations give organisms a better chance for
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Definition1/8
survival
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Term1/8
What is the ultimate source of energy for every cycle
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Definition1/8
sunlight
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Term1/8
What is the force that holds atoms together in a chemical bond
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Definition1/8
Electromagnetism.
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Term1/8
What are the three subatomic particles of a molecule
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Definition1/8
Molecules contain atoms; only atoms contain subatomic
particles.
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Term1/8
When wood rots and forms humus a chemical or physical change
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Definition1/8
when wood rots and forms humus is a physical change
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Cards in this guide (8)
What is true of an atoms nucleus
negatively charged and takes up most of the atoms space
Takes up most of the atoms mass and is negatively charged
How are radioactive isotopes detected
They emit radiation as they decay.
That radiation is not generally detectable by human senses (unless it glows in a color range we can see).
We need lab instruments to detect the radiation such as:
Geiger Counter, with Geiger-Mueller (GM) Tube or Probe-A GM tube is a gas-filled device that, when a high voltage is applied, creates an electrical pulse when radiation interacts with the wall or gas in the tube. These pulses are converted to a reading on the instrument meter.
MicroR Meter, with Sodium Iodide Detector-A solid crystal of sodium iodide creates a pulse of light when radiation interacts with it. This pulse of light is converted to an electrical signal by a photomultiplier tube (PMT), which gives a reading on the instrument meter.
Ionization (Ion) Chamber-This is an air-filled chamber with an electrically conductive inner wall and central anode and a relatively low applied voltage. When primary ion pairs are formed in the air volume, from x-ray or gamma radiation interactions in the chamber wall, the central anode collects the electrons and a small current is generated. This in turn is measured by an electrometer circuit and displayed digitally or on an analog meter.
Neutron REM Meter, with Proportional Counter-A boron trifluoride or helium-3 proportional counter tube is a gas-filled device that, when a high voltage is applied, creates an electrical pulse when a neutron radiation interacts with the gas in the tube. The absorption of a neutron in the nucleus of boron-10 or helium-3 causes the prompt emission of a helium-4 nucleus or proton respectively. These charged particles can then cause ionization in the gas, which is collected as an electrical pulse, similar to the GM tube.
16 Why is the state of matter a physical property and not a chemical property
Because in a chemical reaction atoms are rearranged to form new
substances whilst in a physical reaction or change of state the
atoms are only rearranged. :D
Adaptations give organisms a better chance for
survival
What is the ultimate source of energy for every cycle
sunlight
What is the force that holds atoms together in a chemical bond
Electromagnetism.
What are the three subatomic particles of a molecule
Molecules contain atoms; only atoms contain subatomic
particles.
When wood rots and forms humus a chemical or physical change
when wood rots and forms humus is a physical change