Unit 8 Review eTest

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U8: Atomic Physics

Unit 8 Review eTest

This activity contains 10 questions.

How much charge is on a clump of dust that gained 25 electrons?

6.40 x 10^-21 C4.00 x 10^-21 C4.00 x 10^-18 C8.00 x 10^-18 C

What is an alpha particle?

A positively charged helium ionA helium atomA hydrogen nucleusA positively charged lithium ion

What are the products of the β⁺ decay of ?

A 20-g sample of a radioisotope undergoes decay. If its half-life is 20 min, how much isotope will be left after 2.0 h?

1.7 x 10^-18 g4.9 x 10^-4 g0.31 g0.13 g

When a positron and electron collide, what happens?

A gamma photon, a neutrino, and two muons are produced.A muon is produced.They are annihilated and two gamma photons are produced.They are annihilated and one neutrino is produced.

The following represents a subatomic particle decay event.

What does the "uud" in the decay event represent?

A protonA sigma-plus particleA neutronAn antiproton

What is the magnetic field strength that would deflect an alpha particle (6.65 x 10^-27 kg) in an arc radius of 0.300 m when the ion is travelling at 9.20 x 10⁷ m/s?

3.20 T63.8 T0.111 T6.38 T

Which of the following describes a method of comparing the stability of different nuclei?

Divide the binding energy of the nucleus by the number of neutrons it contains.Multiply the binding energy of the nucleus by the mass of the nucleus.Multiply the binding energy of the nucleus by the number of protons it contains.Divide the binding energy of the nucleus by the number of nucleons it contains.

Use the following information to answer the next 2 questions.
The mass of a helium nucleus is 4.00 u.

What is the mass defect of the helium nucleus?

2.54 x 10^-29 kg6.88 x 10^-27 kg1.32 x 10^-28 kg5.48 x 10^-29 kg

What is the binding energy of the helium nucleus?

7.62 x 10^-21 J2.06 x 10^-18 J1.19 x 10^-11 J4.91 x 10^-12 J

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Unit 8 Review eTest

How much charge is on a clump of dust that gained 25 electrons?

What is an alpha particle?

What are the products of the β+ decay of ?

A 20-g sample of a radioisotope undergoes decay. If its half-life is 20 min, how much isotope will be left after 2.0 h?

When a positron and electron collide, what happens?

The following represents a subatomic particle decay event. What does the "uud" in the decay event represent?

What is the magnetic field strength that would deflect an alpha particle (6.65 x 10-27 kg) in an arc radius of 0.300 m when the ion is travelling at 9.20 x 107 m/s?

Which of the following describes a method of comparing the stability of different nuclei?

Use the following information to answer the next 2 questions. The mass of a helium nucleus is 4.00 u. What is the mass defect of the helium nucleus?

What is the binding energy of the helium nucleus?

What are the products of the β⁺ decay of ?

The following represents a subatomic particle decay event.

What does the "uud" in the decay event represent?

What is the magnetic field strength that would deflect an alpha particle (6.65 x 10^-27 kg) in an arc radius of 0.300 m when the ion is travelling at 9.20 x 10⁷ m/s?

Use the following information to answer the next 2 questions.
The mass of a helium nucleus is 4.00 u.

What is the mass defect of the helium nucleus?