Radioactivity stems from the instability of the nucleus of a given atom. Remember that in an atomic nucleus, protons and neutrons are held together with nuclear glue or binding energy (1H being the exception). Protons don't like each other to begin with. But under the most extraordinary conditions (like in a star), protons and neutrons can be forced together and fused (fusion) to create more complex nuclei. And in a supernova, elements heavier than iron (the heaviest "regular" element that a star makes during "normal" fusion) are created. In all this "creativity" and among all the products that result, some atomic nuclei that are formed aren't really happy with their arrangement. They are unstable, and at some time in the future they will spontaneously break apart. In some arrangements of nucleons (the particles that make up an atomic nucleus, the protons and neutrons), the ratio of the two types of particles, the ratio of protons to neutrons, is one that "strains" the combinational power that holds them together and other arrangements are possible. It is the number and type of nucleons that make up a nucleus that determines how stable it is. There are many stable nuclei. There are many combinations that are not possible - they will never form, they cannot form - and then there are the unstable nuclei. The different numbers of protons and neutrons that make up a nucleus make for a different "dynamic" in each atomic nucleus in which they are confined. Some are structures that will stay together, and in some of the structures formed, the nucleons can "shift" and break the structure of the nucleus, thereby allowing the nucleons to move to a lower energy level state. In radioactive decay, a shift in the nuclear structure and the release of a particle (or particles) and/or energy, allows the remaining nucleons to "rewrite" the terms and conditions of their "confinement" in the nucleus. This spontaneous transition is what radioactive decay is. The possibilities are why some nuclei are stable and some are not, and why some are more stable than others. It is impossible to say when any given unstable atom will decay, but over a large number of them, an "avarage" rate of decay can be quantified. That will allow us to know the half life of that radionuclide.
Some are more radioactive than others.
Yes, radioactive materials are present every where. Some small fraction of almost every material is radioactive.
No, some radioactive materials are not solids. Most radioactive materials are solids (uranium, plutonium, isotopes of many other materials) Some radioactive materials are gases (Radon) or isotopes of gases (Tritium, carbon fourteen, etc.)
It is important because some materials take longer to decompose than others
No. At least no more than any other rocks. Almost all materials contain some trace of radioactive material.
Radioactive materials come in all sorts. Some are really "hot" and will damage a person instantly, others are "cooler" and can be handled a bit without any risk.
yes they do some balls just have more elasticity than others and some are made of different materials!!!!!!!!!!!!!!!!....................................... NO PROB!!
Radioactive materials can be dangerous if someone is exposed to them for long periods of time. Some of these items can be francium, uranium, thorium, plutonium, radium and neptunium.
In many cases, radioactive materials can prove more effective than surgery. This only applies in cases where the mass or object of concern is not able to be operated on. There are some better alternatives than either radioactive treatment or surgery, but this would depend on the type of issue.
Some materials sink in water because they are more dense than the water. Others float because they are less dense than water.
Electrons. Electricity is composed of free electrons and some radioactive decays emit electrons (beta particles)
Some golf balls are better than others because they are created with stronger materials. Some are better because they are more precisely balanced than others.
Some isotopes are safe while others can be radioactive.
That depends on the specific isotopes involved. Some decay faster than others.
Some knives are more expensive than others because of how they are made, the materials they are made of. Some of the price is based on how sharp the blades are and how long the knives will last.
You are exposed every day from natural sources. In some areas there are trace amounts of radioactive material in the ground. Some of the decay processes releases Radon gas, which can enter homes. The radon gas is radioactive, so you are breathing a radioactive source. Even common building materials may have some radioactive material in them.
Minerals that glow in the dark may or may not be radioactive. There are some other reasons that a mineral could glow in the dark without it being radioactive. Certainly if a material is radioactive enough it will glow in the dark. But note that some radioactive materials are only weakly radioactive, and an observer will not be able to see them glow in the dark.
because there some toxic materials in carbonate minerals thats why it readts more readily to hydrochloric acid than others...
There are indeed three kinds of radioactive radiation: alpha, beta and gamma radiation. More There are other kinds of radioactivity. Neutrons are given off in some forms of radioactive decay. And there are others.
Many different websites offer homeschooling materials, books and more. Some of these include HomeSchoolingBooks.com, Time4learning.com, HomeSchoolingSupply.com and others.
Francium, Uranium, Thorium, Plutonium, Radium, Neptunium,
Yes, as some materials are more porous than others.
It depends on the radioactive material. All radioactive isotopes have a property called a "half-life". This is the time it takes for half the atoms in the sample to decay. This concept is a little confusing. "Half" refers to "half of whatever's left," so after one half-life, half of the radioactive material will still be there; after two half-lives, half the original material plus half of the other half will be gone and one quarter will remain; after three half-lives one eighth will remain, and so forth. Complicating this even further is that some materials decay into OTHER radioactive materials which have their OWN half-lives, and which may then decay into YET MORE radioactive materials... As you can see, the bookkeeping can get fairly involved, even without allowing for the fact that some materials have several decay options.