Interim Exam Quick Review

What is the total number of protons and neutrons in an atom is called?

• Atomic number

• Oxidation number

• Mass number

• Weight number

Complete the missing label on the diagram.

• Neutron
• Centre
• Nucleus
• Sub atomic particle

Tags

NGSS.MS-PS1-1

What element is represented in this Bohr Model? 

• Carbon
• Hydrogen
• Aluminum
• Lithium

Tags

NGSS.MS-PS1-1

What is the correct number of subatomic particles of a phosphorous atom with a mass of 31?

• p# - 15, n# = 15, e# = 15

• p# - 15, n# = 16, e# = 15

• p# - 15, n# = 15, e# = 16

• p# - 16, n# = 15, e# = 15

Which of the following is the splitting of a larger nucleus into smaller nuclei?

• fusion
• fission
• half-life
• gamma radiation

Tags

NGSS.HS-PS1-8

Which of the following correctly identifies the illustration?

• Fission  reaction
• Fusion reaction
• Decomposition reaction
• Decay

Tags

NGSS.HS-PS1-8

What is an advantage of nuclear energy?

• radioactive waste

• it is more reliable than renewable energy

• we will never run out

• it is the safest way to make energy

The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?

• 3.0g
• 0.25mg
• 0.3g
• 0.25g

What is the half-life of iodine-131?

• 32 days
• 8 days
• 16 days
• 24 days

What is Half-life?

• The amount of time it takes for some of the nuclei in a sample of the isotope to decay
• The amount of time it takes for half the electrons in a sample of the isotope to decay
• The amount of time it takes for half the nuclei in a sample of the isotope to decay
• the amount of time it takes to double the nuclei in a sample of the isotope to decay