Module 20

Use the image to answer the following questions: What is the element nucleus produced by this reaction?

• Hydrogen nucleus

• Helium nucleus

• Nitrogen nucleus

• Carbon nucleus

Tags

NGSS.HS-PS1-8

Element Z has half-life of 20 minutes. If you start with a 200 g sample of element Z, how many grams of the sample would remain after one half-life? (include labels)

• 200 g

• 150 g

• 100 g

• 50 g

Tags

NGSS.HS-PS1-8

Element Z has half-life of 20 minutes. If you start with a 200 g sample of element Z, how many grams of the sample would remain after 5 half-lives? (include labels)

• 12.5 g

• 6.25 g

• 3.125 g

• none

Tags

NGSS.HS-PS1-8

Element Z has half-life of 20 minutes. You will start with 200 g sample of element Z. How many minutes will it take for element Z to go through five half-lives? (include labels)

• 40 minutes

• 60 minutes

• 80 minutes

• 100 minutes

• 120 minutes

Tags

NGSS.HS-PS1-8

Use the image to answer the following questions: What type of nuclear reaction is shown?

• Nuclear fusion

• Nuclear fission

Tags

NGSS.HS-PS1-8

the amount of time it takes for a radioactive isotope to decay to one-half of its original amount

• chain reaction

• radioactivity

• half-life

• transmutation

Tags

NGSS.HS-PS1-8

____: process in which heavy atomic nuclei split into two or more smaller, lighter atomic nuclei; causes a large release of energy.

• fusion

• fission

• radioactivity

• weak nuclear force

Tags

NGSS.HS-PS1-8

What is the half-life of a radioactive element if 200 g of it decays to 25 g in 60 minutes?

• 10 minutes

• 20 minutes

• 30 minutes

• 40 minutes

Tags

NGSS.HS-PS1-8

A scientist observes a chemical reaction where the temperature of the solution increases. What type of reaction is this likely to be?

• Endothermic

• Exothermic

• Isothermal

• Adiabatic

Tags

NGSS.HS-PS1-4

Which of the following best describes the process of photosynthesis?

• Conversion of chemical energy into light energy

• Conversion of light energy into chemical energy

• Conversion of thermal energy into mechanical energy

• Conversion of mechanical energy into thermal energy

Tags

NGSS.HS-LS1-5