test2 - CHEM 1151K Test II Multiple Choice (2 point each,...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEM 1151K Test II Multiple Choice (2 point each, put answers on the answer sheet) 1. Beta particles are the same as a. electrons b. helium nuclei c. protons d. neutrons 2. The atomic number increases by 1 during _________ decay. a. alpha b. beta c. gamma d. positron 3. After three half-lives, what fraction of the original radioactive isotope remains in a sample? a. none b. 1/16 c. 1/8 d. ¼ 4. Technetium-99 m is nearly ideal for diagnostic scanning procedures because it emits a. only alpha particles b. only gamma rays c. only beta particles d. neutrons 5. Which form of radiation has no mass and no charge? a. gamma b. positron c. alpha d. beta 6. Stable nuclei can be bombarded with alpha particles to form new elements. What is this process called? a. alpha emission b. radioactivity c. positron emission d. artificial transmutation 7. Iodine-131 is useful in diagnosis of problems in the ______________ . a. formation of red blood cells b. uptake of vitamin B 12 c. heart d. bone 8. What is the name of the following particle: 4 2 He? a. alpha b. gamma c. beta d. positron 9. Plutonium-239 ( 239 94 Pu) emits an alpha particle when it decays. What new element is formed? a.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

test2 - CHEM 1151K Test II Multiple Choice (2 point each,...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online