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Radioactivity and Nuclear Decay

Chemistry

9th Grade

Used 22+ times

Radioactivity and Nuclear Decay
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The mass number is the number of neutrons and electrons that are part of the nucleus.

True

False

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

alpha particle

beta particle

gamma ray

uranium

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The most penetrating type of radiation is the ____.

alpha particle

beta particle

gamma ray

uranium

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A helium nucleus with two protons and two neutrons is called a(n) ____.

alpha particle

beta particle

electroscope

gamma ray

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Negatively charged particles emitted from a nucleus at a high speed are ____.

alpha particles

beta particles

gamma rays

X rays

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The discovery of radioactivity by Henri Becquerel involved a ____.

bubble chamber

chain reaction

Geiger counter

photographic plate

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The stability of an isotope nucleus depends on the ____.

atomic mass

atomic number

number of neutrons

neutron-to-proton ratio

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