11th grade atoms, elements and the periodic table
11th grade (Year 12 in England) · 16 questions · Common Core: NGSS.HS-PS1-7, NGSS.HS-PS1-8, NGSS.HS-ESS1-1 · England: GCSE Combined Science: Quantitative chemistry, GCSE Combined Science: Atomic structure (radioactivity) (nuclear equations), GCSE Physics: Atomic structure (nuclear fission and fusion)
Name
Date
Score/ 16
Question 1
polonium-210 (mass number 210, atomic number 84) undergoes alpha decay to form Pb. What is the mass number of the new nucleus?
Answer
Question 2
Fission or fusion: needs extremely high temperature and pressure?
- A. fission
- B. fusion
Question 3
The percentages by mass of all the elements in a compound always add up to…
- A. the Mr
- B. 100 %
- C. the number of atoms
- D. 50 %
Question 4
Why is fusion so hard to achieve on Earth?
- A. Fusion only works with uranium
- B. Nuclei repel each other, so extremely high temperatures and pressures are needed
- C. There is no hydrogen on Earth
- D. Fusion releases no energy
Question 5
Fission and fusion: which statement is NOT true?
- A. Both fission and fusion convert a small amount of mass into energy.
- B. A nuclear reactor uses a moderator to slow neutrons down.
- C. Fusion splits large nuclei.
- D. Fission products are usually radioactive.
Question 6
What is the percentage by mass of carbon in carbon dioxide, CO₂? (Ar: C = 12, O = 16) Give 1 decimal place.
Answer%
Question 7
A nucleus with A = 210, Z = 84 decays into a nucleus with A = 206, Z = 82. What type of decay is this?
- A. alpha decay
- B. beta decay
- C. gamma emission only
Question 8
Why does the element change in alpha and beta decay?
- A. The atom gets hotter
- B. The number of electrons in shells changes
- C. The number of protons in the nucleus changes
- D. The mass stays the same
Question 9
What mass of iron is in 80 g of Fe₂O₃? (Ar: Fe = 56, O = 16)
Answerg
Question 10
polonium-210 (mass number 210, atomic number 84) undergoes alpha decay to form Pb. What is the atomic number of the new nucleus?
Answer
Question 11
Fission or fusion: a uranium-235 nucleus splits after absorbing a neutron?
- A. fission
- B. fusion
Question 12
The percentages by mass of all the elements in a compound always add up to…
- A. the Mr
- B. 50 %
- C. 100 %
- D. the number of atoms
Question 13
What starts a chain reaction in uranium-235?
- A. neutrons released by one fission go on to cause more fissions
- B. heat melting the fuel
- C. gamma rays splitting protons
- D. electrons jumping between atoms
Question 14
Fission and fusion: which statement is NOT true?
- A. Both fission and fusion convert a small amount of mass into energy.
- B. Fission products are usually radioactive.
- C. Fusion releases energy in the Sun.
- D. A nuclear power station can explode like a nuclear bomb.
Question 15
What is the percentage by mass of carbon in glucose, C₆H₁₂O₆? (Ar: C = 12, H = 1, O = 16) Give 1 decimal place.
Answer%
Question 16
A nucleus with A = 226, Z = 88 decays into a nucleus with A = 222, Z = 86. What type of decay is this?
- A. alpha decay
- B. beta decay
- C. gamma emission only
All done? Color in the animal! · Free from eurekami.com/math