Free Printable Intro to Nuclear Chemistry

Worksheets

Intro to Nuclear Chemistry

Total questions: 20

Worksheet time: 23mins

Name

Class

Date

The time taken for half of an amount of radioactive atoms to decay.

Nuclear fusion

Full-life

Dead time

Half-life

Arrange in order of increasing ability to penetrate matter.

Beta, gamma, alpha

Alpha, gamma, beta

Gamma, beta, alpha

Alpha, beta, gamma

What do these symbols represent?

alpha particle

beta particle

neutron

gamma ray

How many neutrons are in this isotope of Uranium?

235

327

143

The type of radioactive particle that can be stopped by a sheet of paper is the ____.

alpha particle

beta particle

gamma ray

uranium

This is an example of...

Fission reaction

Fusion reaction

Decomposition reaction

Combustion

How do atoms with stable nuclei differ from atoms with unstable nuclei? Nuclei is the plural of nucleus.

The number of particles in stable nuclei never changes; the number of particles in unstable nuclei does change

Stable nuclei contain equal numbers of protons and neutrons; unstable nuclei do not

Stable nuclei emit electrons; unstable nuclei emit protons and neutrons

Stable nuclei can be found everywhere; unstable nuclei do not occur in nature

How is nuclear fusion different from nuclear fission?

In fusion, the product is a larger atomic nucleus.

Fission produces energy but fusion does not.

Fusion produces energy but fission does not.

In fission, the product is a larger atomic nucleus.

This is an example of ---

Radioactive Decay

Nuclear Fission

Nuclear Fusion

Fossil fuel reaction

10.

What happens when the number of protons in an atom changes?

The number of electrons changes too

Usually nothing happens, unless the atom is radioactive

The atomic nucleus explodes

It becomes a completely different atom, with different properties

11.

Has the highest penetrating power. Can penetrate our body. Even several cm thick of lead or several meters thick of concrete cannot stop all of it.

Alpha

Beta

Gamma

12.

What is the charge of beta particles?

-1

13.

Based on the graph, determine how long it will take 1/4 of a carbon sample will remain

5730 years

11460 years

17910 years

28650 years

14.

What makes something radioactive?

elements with an atomic number above 81

an unstable nucleus

contaminated sewage

It decays over time

15.

What is a nuclide?

Protons and electrons

Neutrons and electrons

Protons, neutrons and electrons

Neutrons and protons

16.

Which has the longest wavelength?

microwave

radio

ultraviolet

infrared

17.

Which EM wave has the highest energy?

Radio waves

X-rays

Gamma waves

Ultraviolet waves

18.

What equation represents the relationship of energy to mass?

x = (-b±√(b²-4ac))/(2a)

e = mc²

a² + b² = c²

ax²+bx+c=0

19.

Marie Curie designed the first ........ .

washing machine.

mobile X-Ray machine.

microwave oven.

mobile phone.

20.

The radioactive decay of an element (pick all that are correct)

each element has it's own half life

each element decays into a new element

during decay it only releases gamma particles

we know the decay rates for all the radioactive elements

100 %

Intro to Nuclear Chemistry

Total questions: 20

Worksheet time: 23mins

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