Atomic physics Year 11

Atomic physics Year 11

8th - 9th Grade

12 Qs

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Atomic physics Year 11

Atomic physics Year 11

Assessment

Quiz

Physics

8th - 9th Grade

Practice Problem

Medium

Created by

Runar Salimullin

Used 2+ times

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12 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The scattering of α-particles by a thin metal foil supports the nuclear model of an atom.

Why are α-particles used rather than neutrons?

because they always travel more slowly

because they are heavier

because they are larger in diameter

because they have a positive charge

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A nucleus of a radioactive substance  84218Po _{84}^{218}Po\   undergoes an α-decay followed by a β-decay.
What are the nucleon (mass) number (A) and proton (atomic) number (Z) of the nuclide formed after both decays have happened? 

A=214, Z=85

A=216, Z=85

A=214, Z=83

A=216, Z=83

3.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Media Image

Fig. 12.1 shows a decay curve for polonium-210.

Use the graph to determine the half-life of polonium-210.

half-life = _____ weeks

4.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

The half-life of carbon-14 is 5800 years.

A piece of wood contained 20 000 carbon-14 atoms when it was buried in a landslide.

Calculate the number of years it takes until the number of carbon-14 atoms in the wood is 2500.

5.

OPEN ENDED QUESTION

3 mins • Ungraded

Media Image

(a) Fig. 12.1 represents an atom of carbon.
(i) State the name of particle X.
(ii) State the name of particle Y.
(b) Carbon-14 is unstable. It decays by beta emission to form nitrogen.
Complete the equation for this decay. _6^{14}C\ \ \rightarrow\ _Z^AN\ \ +_{-1}^0e\ 

A= ...
Z= ...

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6.

OPEN ENDED QUESTION

3 mins • Ungraded

Describe how an electric field between two charged plates could be used to determine whether a beam of particles consists of α- or β-particles.

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7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Below are four statements about isotopes of a certain element.

Which statement about the isotopes must be correct?

They are radioactive.

They are unstable.

They have the same number of neutrons.

They have the same number of protons.

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