Radioactivity II Lowersixth Science Chemistry

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Engage with key nuclear concepts.

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YAKILI LMS

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Radioactivity II Lowersixth Science Chemistry


Froggy Jumps Radioactivity II Lowersixth Science ChemistryOnline version Engage with key nuclear concepts. by YAKILI LMS 1 What is a type of nuclear equation that shows particle exchange? a Nuclear balance b Nuclear reaction c Mass equation 2 Which is a consequence of radioactive emissions? a Temperature rise only b Nervous system gain c Ionization of atoms 3 What does mass defect relate to? a Weight loss b Difference in mass and energy c Mole ratio difference 4 Binding energy per nucleon helps explain: a Molar volume b Nuclear stability c Chemical bonding 5 Rate of radioactive decay is usually expressed as: a Concentration (M) b Speed (m/s) c Activity (Bq or Ci) 6 What is decay constant (lambda)? a Total number decayed b Probability of decay per unit time c Half-life inverse 7 Which particle is emitted in alpha decay? a Helium-4 nucleus b Hydrogen-3 c Neutron 8 Beta minus decay emits: a Positron b Gamma ray only c Electron and antineutrino 9 Which particle is emitted in beta plus decay? a Neutron b Positron and neutrino c Electron and antineutrino 10 Gamma decay primarily changes: a Number of protons b Charge balance c Energy state, not mass 11 Which equation involves mass-energy conversion? a PV=nRT b E=mc^2 c F=ma 12 Mass defect is used to calculate: a Activation energy b Binding energy c Ionization energy 13 Which quantity measures how fast nuclei decay? a Half-life b Activation energy c Decay constant only 14 A nucleus with high binding energy per nucleon is typically: a Less stable b Radioactive instantaneously c More stable 15 What is the unit of activity? a Newton b Joule c Becquerel 16 Which equation represents alpha decay? a Neutron capture b Parent nucleus -> daughter + He-4 c Parent + gamma -> daughter 17 In beta decay, a neutron turns into: a Proton + positron b Neutron emitted only c Proton + electron + antineutrino 18 Which radiation has highest ionizing power? a Beta particles b Alpha particles c Gamma rays 19 Which decay decreases atomic number by 1? a Beta plus decay b Beta minus decay c Alpha decay 20 Which decay increases atomic number by 1? a Beta minus decay b Gamma decay c Alpha decay 21 Which decay leaves mass number unchanged? a Alpha decay b Gamma decay c Beta decay 22 What is the Q-value of a nuclear reaction? a Total mass b Total charge c Net energy released or absorbed 23 Which is not a form of radioactive emission? a X-ray emission (non-nuclear) b Beta c Alpha 24 Which process reduces mass defect energy release? a Beta decay b Fission of heavy nuclei c Fusion of light nuclei 25 Rate constant k is used in which equation? a PV = nRT b N = N0 e^(-kt) c F = ma 26 Which quantity combines mass change and energy? a Atomic number b Molar mass c Mass defect 27 What captures the energy release in binding energy? a Ionization energy b Mass defect c Molar mass 28 A nucleus with lower binding energy per nucleon tends to: a Fission more easily b Becomes stable instantly c Fusion more easily 29 Which factor affects radioactive decay rate? a Ambient temperature b Pressure c Intrinsic property of nuclide 30 What does activity measure? a Particles absorbed b Energy emitted c Disintegrations per second 31 What is a typical unit for half-life? a Seconds to years b Moles c Liters 32 Which interaction causes ionizing radiation? a Chemical reaction b Nuclear decay c Fusion only 33 What is the effect of decay on nucleons? a No change in composition b Changes composition c Increases mass only 34 Which process converts a proton to a neutron? a Alpha decay b Beta minus decay inside nucleus c Beta plus decay 35 Which reaction demonstrates mass-energy equivalence? a Nuclear fission with energy release b Physical dissolution c Chemical combustion 36 What happens in electron capture? a Neutron converts to proton b Proton converts to neutron c Emission of alpha particle 37 Which quantity decreases with time in decay? a Number of electrons b Volume of sample c Number of undecayed nuclei 38 Which nuclear equation conserves charge and nucleons? a All conserved quantities balance b Only energy conserved c Only mass conserved 39 Which particle is emitted in alpha decay? a Helium-4 nucleus b Hydrogen-1 c Electron 40 Which decay increases atomic number by 1? a Beta minus decay b Alpha decay c Gamma decay 41 Which decay leaves the mass number unchanged? a Gamma decay b Beta decay c Alpha decay 42 What does a higher binding energy per nucleon imply? a Faster decay b Greater stability c Less stability 43 What unit measures decay rate per second? a Becquerel (Bq) b Pascal c Joule 44 Which process often accompanies radioactive decay? a Condensation b Emission of gamma ray c Absorption of neutrons 45 What is the mass defect used to calculate? a Ionization energy b Activation energy c Binding energy 46 Which effect is caused by ionizing radiation? a No effect on atoms b Heat only c Electron ejection 47 Which equation relates time and remaining nuclei? a F=ma b N = N0 e^(-kt) c PV=nRT 48 What type of decay releases a helium nucleus? a Gamma decay b Beta decay c Alpha decay 49 What describes the energy released in decay? a Work done b Q-value c Potential energy 50 Which type of radiation has lowest penetrability? a Alpha particles b Beta particles c Gamma rays

Radioactivity II Lowersixth Science Chemistry

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Radioactivity II Lowersixth Science ChemistryOnline version

by YAKILI LMS

What is a type of nuclear equation that shows particle exchange?

Which is a consequence of radioactive emissions?

What does mass defect relate to?

Binding energy per nucleon helps explain:

Rate of radioactive decay is usually expressed as:

What is decay constant (lambda)?

Which particle is emitted in alpha decay?

Beta minus decay emits:

Which particle is emitted in beta plus decay?

Gamma decay primarily changes:

Which equation involves mass-energy conversion?

Mass defect is used to calculate:

Which quantity measures how fast nuclei decay?

A nucleus with high binding energy per nucleon is typically:

What is the unit of activity?

Which equation represents alpha decay?

In beta decay, a neutron turns into:

Which radiation has highest ionizing power?

Which decay decreases atomic number by 1?

Which decay increases atomic number by 1?

Which decay leaves mass number unchanged?

What is the Q-value of a nuclear reaction?

Which is not a form of radioactive emission?

Which process reduces mass defect energy release?

Rate constant k is used in which equation?

Which quantity combines mass change and energy?

What captures the energy release in binding energy?

A nucleus with lower binding energy per nucleon tends to:

Which factor affects radioactive decay rate?

What does activity measure?

What is a typical unit for half-life?

Which interaction causes ionizing radiation?

What is the effect of decay on nucleons?

Which process converts a proton to a neutron?

Which reaction demonstrates mass-energy equivalence?

What happens in electron capture?

Which quantity decreases with time in decay?

Which nuclear equation conserves charge and nucleons?

Which particle is emitted in alpha decay?

Which decay increases atomic number by 1?

Which decay leaves the mass number unchanged?

What does a higher binding energy per nucleon imply?

What unit measures decay rate per second?

Which process often accompanies radioactive decay?

What is the mass defect used to calculate?

Which effect is caused by ionizing radiation?

Which equation relates time and remaining nuclei?

What type of decay releases a helium nucleus?

What describes the energy released in decay?

Which type of radiation has lowest penetrability?