HEL! Match the following.

1. helium nucleus emitted from the nucleus of a decaying isotope; represented by He2+
2. an electron or particle similar to an electron emitted from the nucleus with negligible mass and a charge of -1
3. high energy ray of energy emitted from some radioactive atoms that is not affected by a magnetic field
4. neutral particle found in the nucleus; mass about equal to that of a proton
5. the central core of the atom containing most of the mass and made up of protons and neutrons
6. one of the particles of the nucleus; positively charged; symbolized by p
7. energy available or given off in specific, predictable quantities
8. the distribution of light when passed through a prism

nucleus
gamma ray
quantum
alpha particle
neutron
beta particle
spectrum
protons

i don t now

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.