has positive electric charge with equal magnitude to that of an electron.

What is a chain reaction?

When a nuclear fission reaction occurs, the neutrons emitted can strike other nuclei in the sample, and cause them to split

When electrons are emitted causing electricity

When a nuclear fission reaction occurs, the protons emitted can strike other nuclei in the sample, and cause them to split

When a nuclear fission reaction occurs, the electrons emitted can strike other nuclei in the sample, and cause them to split

What do control rods do in a nuclear reactor?

Regulate the rate of reaction by absorbing and slowing neutrons

Produce neutrons to increase the rate of reaction

Reduce heat produced by the uranium rods

One disadvantage of nuclear energy is ___.

it leaves behind radioactive waste

it emits large amounts of pollution into the atmosphere

A moderator, such as graphite, is used to...

stop a nuclear reaction happening

absorb radiation from the reaction

The amount of time it takes for half the nuclei in a sample of the isotope to decay

The amount of time it takes for some of the nuclei in a sample of the isotope to decay

The amount of time it takes for half the electrons in a sample of the isotope to decay

the amount of time it takes to double the nuclei in a sample of the isotope to decay

Why do some elements have half-lives?

they are unstable and radioactively decay

Most of the alpha particles went straight through the gold foil. This suggested that....

Most of the atom is made up of empty space.

There is no interference between alpha and gold.

The alpha particles were very tiny.

Some of the alpha particles fired at the gold foil were deflected at angles. This was due to...

Repulsion forces between the positively charged nucleus and the positively charged alpha particles.

reflection of the alpha source when it it the fluorescent screen.

The alpha particles hitting the gold nucleus.

A mis-firing of the alpha source

What did the Plum pudding model suggest about the structure of atoms?

that is was a sphere of positive charge throughout which the electrons were distributed

That neutrons and electrons were arranged in a sphere.

That an atom was filled with neutrons, protons and a sphere of negative charge.

That neutrons, protons and electrons were distributed throughout a sphere.

Rutherford’s gold foil scattering experiment indicated that

positive charges are concentrated in a very small core at the atom’s center

the nucleus of an atom occupies most of an atom’s volume

positive charges are dispersed throughout the atom.

protons and neutrons are located in the nucleus.

Why did Ernest Rutherford and his colleagues perform the Gold-Foil Experiment?

They wanted to test and confirm the Plum-Pudding model

They wanted to test John Dalton's Model

They were looking for electrons

They wanted to come up with their own Atomic Model

What is an alpha particle?

It is a particle that has 2+ charge

It is a dominant particle in a subatomic world

It is a particle that has 2- charge

It is a helium atom without a charge

What results did Rutherford observe in his Gold-Foil experiment?

He observed that a small number of alpha particles bounced off the gold-foil at very large angles

He observed that all alpha particles did go through a gold-foil in straight lines

He observed that most alpha particles did not go through a gold-foil and stopped on one side of the gold foil.

He observed that all alpha particles slightly deflected from the straight line when going through a gold-foil

Choose one of the conclusions that Ernest Rutherford made about the mass of the atom, based on the experimental results of his Gold-Foil experiment

He concluded that almost all mass of the atom is concentrated in a small region, in a center of an atom, that has a positive charge

He concluded that almost all mass of the atom is distributed evenly among subatomic particles

He concluded that almost all mass of the atom is distributed among electrons

He concluded that almost all mass of the atom is concentrated in a small region, in a center of an atom, that has a negative charge

grade 9 nuclear summary

9th - 10th Grade

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grade 9 nuclear summary

Quiz

•

Physics

•

9th - 10th Grade

•

Practice Problem

•

Medium

•

NGSS.HS-PS1-8, CCSS.HSF.LE.A.4, NGSS.HS-PS3-3

Standards-aligned

stephanie workman

Used 42+ times

FREE Resource

45 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a beta particle made of?

One proton

A helium particle

One electron

One proton and one neutron

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Of the main types of radiation emitted from naturally radioactive isotopes, which is the hardest to block?

Alpha deca

Gamma Decay

Beta decay

They are all blocked using the same method

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

TRUE or FALSE: gamma changes the atomic number.

True

False

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is emitted during Alpha Radiation?

A helium nuclei.

A helium atom

Gamma Rays.

Positrons

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is radioactive decay?

The spontaneous breakdown of an atomic nucleus resulting in only energy release

The spontaneous breakdown of an atomic nucleus resulting in only matter release

The spontaneous breakdown of an atomic nucleus resulting in a release of energy and matter

The decay of the use of radios and the increased use of televisions.

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

When does radioactive decay occur?

When the nucleus of an isotope is unstable

When the nucleus of an isotope is stable

When the electrons of an isotope are spinning

When the electrons of an isotope are shared with another isotope

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Isotopes of the same element have different ____________.

numbers of protons

numbers of electrons

symbols

numbers of neutrons

Tags

NGSS.HS-PS1-8

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grade 9 nuclear summary

45 questions

What is a beta particle made of?

Of the main types of radiation emitted from naturally radioactive isotopes, which is the hardest to block?

TRUE or FALSE: gamma changes the atomic number.

What is emitted during Alpha Radiation?

What is radioactive decay?

When does radioactive decay occur?

Isotopes of the same element have different ____________.

This is an example of...

How many protons does gold atom have?

What is the mass of an alpha particle?

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