Question 1

__________ is the spontaneous emission of rays or particles from certain elements.

Accepted Answer

radioactivity

Answer

isotopes

Answer

photosynthesis

Answer

chemical reactions

Question 2

___________ refers to the rays and particles emitted from a radioactive source.

Accepted Answer

nuclear radiation

Answer

conductivity

Answer

weight

Answer

mass

Question 3

Nuclear reactions begin with unstable isotopes, known as ___________________.

Accepted Answer

radioistopes

Answer

cis-isotopes

Answer

heterotopes

Answer

ions

Question 4

Atoms of radioisotopes become ___________ stable when changes occur in their nuclei.

Accepted Answer

more

Answer

less

Question 5

Nuclear changes are always accompanied by _______________.

Accepted Answer

large amounts of energy

Answer

heat

Answer

poison

Answer

light

Question 6

_____________ reactions are not affected by changes in temperature, pressure or catalysts.

Accepted Answer

Nuclear

Answer

Chemical

Answer

Both nuclear & chemical

Question 7

_______________ of a particular radioisotope cannot be slowed down, sped up or stopped.

Accepted Answer

Nuclear

Answer

Chemical

Answer

Both nuclear & chemical

Question 8

_____________ are always spontaneous.

Accepted Answer

Nuclear

Answer

Both nuclear & chemical

Answer

Chemical

Question 9

radioactive decay of 2 protons and 2 neutrons

Accepted Answer

alpha particles

Answer

beta particles

Answer

gamma rays

Question 10

radioactive decay of -1 charge

Accepted Answer

beta particle

Answer

gamma ray

Answer

alpha particle

Question 11

radioactive decay that has no mass and no charge

Accepted Answer

gamma ray

Answer

beta particle

Answer

alpha particle

Question 12

_________ is the ability of radiation to pass through something

Accepted Answer

penetrating power

Answer

Ionization energy

Answer

Conductivity

Answer

Isomerism

Question 13

A reaction in which an atom's atomic number is changed is called  ____________.

Accepted Answer

transmutation

Answer

isotoperism

Answer

infusion

Answer

transferation

Question 14

The rate at which radioisotopes decay is called its ____________.

Accepted Answer

half life

Answer

shelf life

Answer

half shell

Answer

life span

Question 15

Splitting of the nucleus, generating a large amount of energy is _______________.

Accepted Answer

fission

Answer

fusion

Answer

fashion

Answer

fastion

Question 16

Combining of nuclei, releasing a large amount of energy is ____________.

Accepted Answer

fusion

Answer

fistula

Answer

fasting

Answer

fission

Question 17

bombarding a stable nucleus with a neutron or high energy α, β, or γ radiation

Accepted Answer

induced transmutation

Answer

isomeration

Answer

introduction

Answer

transferation

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