Atoms and Radiation Flashcards
What are ISOTOPES?
Different forms of the same element.
Same proton number but different number of neutrons.
Isotopes have the same?
Atomic number.
Isotopes have different?
Mass numbers.
What is the atomic number?
Number of protons in an atom.
What is the mass number?
Total number of protons and neutrons in an atom.
Most elements have…
Different isotopes.
Usually only 1 or 2 stable ones.
What are the other isotopes called?
Radioactive.
What do the radioactive isotopes do?
Decay into other elements.
Give out radiation.
Radioactive substances give out what? and where from?
Give out radiation.
From nuclei of their atoms.
The process of radioactivity is what?
Totally random.
What is radioactivity not affected by?
Physical conditions.
Temperature.
Chemical bonding.
Radioactive substances spit out one or more of the three types of radiation.
Name the 3.
Alpha.
Beta.
Gamma.
What is background radiation?
Radiation that is present at all times.
All around us, wherever we go.
Background radiation comes from what 3 things?
Radioactivity of naturally occurring unstable isotopes.
Radiation from space.
Radiation due to man-made sources.
Where are unstable isotopes all around us?
Air.
Food.
Building materials.
Rocks under our feet.
