Compare and contrast chemical reactions and nuclear reactions in terms of energy changes and the particles involved.

Explain the importance of the law of conservation of mass in chemical reactions.

Which subatomic particles are involved in chemical reactions?

Describe fundamental differences between nuclear and chemical reactions.

Compare positron emission with electron capture. Positron emission is ________ that involves the emission of a _______ (particle with the same mass as an electron but opposite charge) from a nucleus. During this process, a _______ in the nucleus is converted into a neutron and a positron, and then the _______ is emitted. Electron capture is _________ that decreases the number of ____ in unstable nuclei lying below the ______. This occurs when the nucleus of an atom draws in a surrounding _______, usually from the lowest energy level. The captured electron combines with a ________ to form a _________.

Uranium-234 is used to make dental crowns appear brighter. The alpha decay of uranium-234 produces what isotope?

Write the oxidation and reduction half-reactions for a silver-chromium voltaic cell. Identify the anode, cathode, and the direction of electron flow.

Nuclear fusion can only occur in areas of

(1) high temperature and low pressure

(2) high temperature and high pressure

(3) low temperature and low pressure

(4) low temperature and high pressure

For each of the given elements, list two other elements with similar chemical properties. a. iodine (I) b. barium (Ba) c. Iron (Fe)

Write three questions that come to mind from reading the headings and illustration captions. 1. _____. 2. _____. 3. _____.

Define alpha particle, beta particle, and gamma ray.

Calculate the neutron-to-proton ratio for each atom. tin-134

Describe the neutron-to-proton (n/p) ratio in nuclear stability. The number of protons compared to the number of _______ in a ratio identifies the nuclear ratio. To some degree, the _____ of a nucleus can be correlated with its ________ ratio. As atomic number ______, more ________ are needed to balance the __________ forces. Plotting the number of neutrons versus the number of __________ for all stable nuclei illustrates the _________.

Identify the primary factor in determining an atom's stability.