Mix
Radioactivity discovered by:
A) Becquerel
B) Dalton
C) Mendeleev
D) Pauling
Alpha particle is:
A) He nucleus
B) Electron
C) Neutron
D) Proton only
Beta minus decay:
A) Neutron to proton + electron
B) Proton to neutron
C) Alpha emission
D) Gamma only
Half-life is time for:
A) Half nuclei decay
B) All decay
C) Double amount
D) No decay
Carbon dating uses:
A) C-14
B) C-12 only
C) U-238 only
D) H-1
Green chemistry aims:
A) Reduce hazardous waste
B) More waste
C) Only profit
D) Ban all chemicals
Greenhouse gas example:
A) CO2
B) O2
C) N2
D) Ar
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