The B. atomic mass of an atom is based on the mass of an atom of carbon-12.
The <em>ionic charge</em> depends on the number of <em>electrons</em>.
The <em>atomic number</em> depends on the number of <em>protons</em>.
<em>Isotopes</em> depend on the number of <em>neutrons</em>.
A good example is cigarretes they try to scare you into not smoking by telling you all of the downsides of smoking like lung cancer and i guess that would be fear appeal
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A piece of gold foil was hit with alpha particles, which have a positive charge. Most alpha particles went right through. This showed that the gold atoms were mostly empty space. Some particles had their paths bent at large angles. A few even bounced backward. The only way this would happen was if the atom had a small, heavy region of positive charge inside it.
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When you freeze the already cracked glow stick the chemical reactions are slowed down. When you take it out of the freezer and it reaches room temperature the chemical reaction will go on as 'normal'. XD hope this helps
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litmus paper turns red under acidic conditions
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