Chem 122 Exam 4

What batteries have Zinc as their anode? What end of a battery is negative?

Dry cell and alkaline; anode

What mass of fissionable material is required to self-sustain a nuclear chain reaction?

Critical mass

Metal oxides are an important part of the cathode for many common batteries. Which of the following batteries use metal oxides as part of their cathode?

Lead-acid battery, dry cell battery, & alkaline battery

Decrease of 2n and 2p

Alpha decay

Splitting of nucleus.

Spontaneous fission

Beta decay

Positron capture

Electron capture

Converts n into p.

Converts p into n.

Converts p into n.

Which is a type of nuclear reaction where a large nucleus splits into two smaller nuclei with the release of a large amount of energy?

Nuclear fission

Which is a type of nuclear reaction where two small nuclei are merged together to generate a larger nuclei and a tremendous amount of energy?

Nuclear fusion

What does the term "critical mass" mean?

The amount of fissionable material which will self-sustain a nuclear chain reaction.

Which structural component of a nuclear reactor is cadmium (Cd) found?

Control rods

If a nucleus emits an alpha particle…

its atomic number decreases by two and its mass number decreases by four.

What are the magic neutron and proton numbers?

2, 8, 20, 50, 82, and 126

What are the primary batteries?

Dry cell and alkaline

What is a secondary battery? What are the types?

A rechargeable battery; lithium-ion battery and lead-acid

What is the anode in an alkaline battery?

Zinc

What is the cathode in an alkaline battery?

MnO2

What batteries use a metal oxide as their cathode?

All common batteries

What is the anode of lead-acid batteries?

Lead

What is the anode of lithium-ion batteries?

Graphite