. A(n)____________is a high energy electron beta particle helium nucleus alpha p

Question

. A(n)____________is a high energy electron beta particle helium nucleus alpha particle positron 2. The most difficult radiation to block out is __________ alpha particles beta particles gamma rays visible light rays 3. A(n) ____________ is a high energy electron released from a nucleus during radioactive decay. alpha gamma positron beta 4. Which product of nuclear decay has mass but no charge? alpha beta gamma rays neutrons 5. 23592U and 23892O are examples of ____________ allotropes isotopes particles of radiation tracers 6. A ____________consists of a helium nucleus. alpha particle beta particle gamma particle positron 7. Complete the following equation by adding the missing species: 239 94 Pu + ? ---> 242 96 Cm + 1 0n 11 p 0-1 e 42 He 10 n 8. Which is not a form of nuclear decay? alpha beta gamma deuterium 9. The time required for half of a sample of a radioactive substance to undergo nuclear decay is called the _______. half life fission radioactive life fusion 10. 14/6C has a half-life of 5730 years how many grams of a 4.0 g sample would be left after 3.5 half-lives? 1.0g 0.50g 0.38g 0.35g 11. Which of the following organic compounds has the lowest molar mass? C7H10O C7H14 C4H8O4 C6H10O2 12. How many atoms are in 5 g of copper? 4.74x1022 atoms 6.02x1023 atoms 68 atoms 5.02x1021 atoms 13.If a molecule has the molecular formula H2O2, what is its empirical formula? H3O3 HO H2O2 H2O4 14. If a molecule has 2 nitrogens and 3 oxygens, what is the molecular formula? N2O3 N3O2 N4O6 NO 15. If a molecule has 12 carbons, 6 hydrogens, and 12 oxygens, what is its molecular formula? C2HO3 CHO2 C6H12O6 C12H6O12

Explanation / Answer

1) beta particle

2) gamma rays

3) beta

4) neutrons

5) isotopes

6) alpha particles

7)

8) deutrium

9) half life

10)

11) C7H14

12) 4,74 x 10^22 atoms

13) HO

14) N2O3

15) C12H6O12

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