ISH Year 10 Radioactivity

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Tags

NGSS.MS-PS1-1

An isotope of an element has the same number of _________, but a different number of _________.

• Protons, electrons
• Protons, neutrons
• Electrons, neutrons

_______________ is the process by which unstable atoms emit radiation until they become stable.

• Radiation
• Chemical Reaction
• Radioactive Decay
• Isotopes

Tags

NGSS.HS-PS1-8

Name the most penetrating type of radiation.

• alpha
• beta
• gamma
• lambda

What is nuclear fission?

• Big nucleus splits to small nuclei
• Small nuclei fuse into a bigger nucleus
• Stars
• Making compounds

Tags

NGSS.HS-PS1-8

The three types of nuclear radiation in order of increasing penetrating power are

• alpha, beta, gamma
• alpha, gamma, beta
• beta, alpha, gamma
• gamma, alpha, beta

Tags

NGSS.HS-PS1-8

What type of radioactive decay is shown here?

• Alpha decay
• Beta decay
• Gamma decay

What particle is released when an unstable isotope undergoes alpha radiation?

• an helium nucleus
• an electron
• a photon of light

what's the half life of this substance?

• 1 day
• 2 days
• 3 days
• 4 days

Tags

NGSS.HS-PS1-8

What percent of an isotope will remain after 2 half lives?

• 50%

• 35%

• 12.5%

• 25%