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Chemistry
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13 Dec 2019

I greatly appreciate any help with these multiple choices;

1. What radiation has a charge of -1?

a. Alpha b. Beta c. Gamma d. Positron

2. What type of radiation is given off when the atomic number decrease by 2?

a. Alpha b. Beta c. Gamma d. Positron

3. What type of radiation is given off when the atomic number increase by 1?

a. Alpha b. Beta c. Gamma d. Positron

4. What type of radiation is given off when the atomic number does not change?

a. Alpha b. Beta c. Gamma d. Positron

₀

5. What is the name of the following type of radiation? -1 e

a. Alpha b. Beta c. Gamma d. Positron

6. What radiation has a charge of +2?

a. Alpha b. Beta c. Gamma d. Positron

7. What type of radiation particle is given off when a neutron becomes a proton?

a. Alpha b. Beta c. Gamma d. Positron

8. What type of radiation is just a high energy photon (energy packet)?

a. Alpha b. Beta c. Gamma d. Positron

9. What type of radiation consists of 2 protons and neutrons?

a. Alpha b. Beta c. Gamma d. Positron

10. What type of radiation has a mass of 4 atomic mass units?

a. Alpha b. Beta c. Gamma d. Positron

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17 Dec 2019
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Related questions

(a) From the Kinetics chapter as review, write an equation that relates half-life (t1/2) and rate constant (k) for 0th order reaction, for 1st order reaction and for second order reaction.

(b) For the half-life equation given for nuclear reactions, what order reaction is it?

(c) Write the proper notation for alpha, beta, positron, gamma, proton and neutron.

(d) what is another name for a beta particle?

(e) Using your own words, explain the band of stability.

(f) Using your own words, explain Binding energy.

1. Which particles in the following tableresult in no change in nuclear charge when emitted in nucleardecay?
Table Particles Found in Nuclear Reactions (ONLY ONE correct):

Particle

a. Neutron

b.Proton

c. Electron

d. Alphaparticle

e. Betaparticle

f. Positron

2 .Given that only two or three neutrons arereleased per fission event and knowing that the nucleus undergoingfission has a neutron-to-proton ratio characteristic of a heavynucleus, what sorts of decay would you expect to be dominant amongthe fission products?

a. alpha emission

b. positron emission

c. beta decay

1. (1 point) What might be damaged by ionizing radiation? * paper soft tissue wood lead

2. (1 point) When an atom emits an beta particle, what is the change in the atomic number? * no change decrease by 1 decrease by 2 increase by 1 increase by 2

3. (1 point) What is the change in atomic mass caused by the emission of gamma radiation? * no change decrease by 1 decrease by 2 increase by 1 increase by 2

4. (1 point) Which of the following materials would effectively stop gamma radiation? * one foot of concrete single sheet of paper thin pieces of wood three inches of lead

5. (1 point) When the ratio of neutron-to-proton dictates that a neutron must break down it will form _________. * A helium nucleus An alpha particle A proton and an electron Two protons

6. (1 point) What determines the type of decay if a nucleus falls outside the band of stability? * the ratio of alpha particles to beta particles the ratio of beta particles to alpha particles the ratio of neutrons to protons the ratio of protons to neutrons

7. (1 point) A positron is emitted when ____________. * an alpha particle forms a beta particle forms proton converts to a neutron neutron converts to a proton

8. (1 point) How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle by emitting a beta particle

9. (1 point) How much of the original sample would remain after two half lives have past? * There would be nothing of the original left There would be half of the original sample still there There would be one quarter of the sample still present There would only be one eighth of the original sample still present

10. (1 point) What is the approximate half life of carbon- 14? * hundreds of years thousands of years million of years billion of years

11. (1 point) A reaction where a heavier nucleus splits into smaller nuclei is called ___________. * a chemical reaction background radiation fission fusion

12. (1 point) __________ and ___________ are used as moderators to capture neutrons in a nuclear reactor. * Cadmium and other metal Carbon and water Liquid sodium and water Plutonium and neptunium

13. (1 point) For a person working in a place where they might be exposed to radiation a _________ is routinely used to check their exposure. * film badge Geiger counter moderating rod scintillation counter

14. (1 point) Radioisotopes are used to do all of the following except __________. * analyze matter. diagnose medical problems. improve the flavor of food. treat diseases. study plant growth. Open response questions: Answer the following with complete sentences or if math is involve show the work

15. (3 point) The radioisotope radon-222 has a half-life of 3.8 days. How much of a 198.6 g sample of radon -222 would be left after approximately 23 days? ( Show your work) * Your answer

16. (3 point) How can an element be artificially transmuted? Give an example that has an element and what it is transmuted into. * Your answer

17. (4 point) Why does the mass and charge of an alpha particle make it less penetrating than a beta or gamma? Discuss both the mass and the charge(2 points each). *

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