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The half-life of cadmium-109 is 464 days. A scientist measures out a 256.0 gram (g) sample. Approximately how many grams of cadmium-109 would remain after 1,392 days?
ringing a bell transfers mechanical energy to sound energy
A candle directly transforms chemical energy into light energy as it burns
32.0 g
5,730 years old
An unstable atom that emits gamma rays is used in radiation therapy to treat cancer
The reaction is fission, and energy is released
One small atom merging with particles to steadily become larger
Krypton (36 p, 53 n) and Barium (56 p, 88 n)
A neturon hits U-235 (92 p, 143 n). U-235 splits, becoming three neutrons AND TWO OTHER PARTICLES. Which two particles are they?
ringing a bell transfers mechanical energy to sound energy
A candle directly transforms chemical energy into light energy as it burns
32.0 g
5,730 years old
An unstable atom that emits gamma rays is used in radiation therapy to treat cancer
The reaction is fission, and energy is released
One small atom merging with particles to steadily become larger
Krypton (36 p, 53 n) and Barium (56 p, 88 n)
Which of these energy transfers is correct?
ringing a bell transfers mechanical energy to sound energy
A candle directly transforms chemical energy into light energy as it burns
32.0 g
5,730 years old
An unstable atom that emits gamma rays is used in radiation therapy to treat cancer
The reaction is fission, and energy is released
One small atom merging with particles to steadily become larger
Krypton (36 p, 53 n) and Barium (56 p, 88 n)
If a large atom breaks into two smaller ones, what is the type of reaction and the energy change that occurs?
ringing a bell transfers mechanical energy to sound energy
A candle directly transforms chemical energy into light energy as it burns
32.0 g
5,730 years old
An unstable atom that emits gamma rays is used in radiation therapy to treat cancer
The reaction is fission, and energy is released
One small atom merging with particles to steadily become larger
Krypton (36 p, 53 n) and Barium (56 p, 88 n)
Which of the following best describes how an atomic property is used in the treatment of cancer?
ringing a bell transfers mechanical energy to sound energy
A candle directly transforms chemical energy into light energy as it burns
32.0 g
5,730 years old
An unstable atom that emits gamma rays is used in radiation therapy to treat cancer
The reaction is fission, and energy is released
One small atom merging with particles to steadily become larger
Krypton (36 p, 53 n) and Barium (56 p, 88 n)
Carbon-14 has a 1/2 life of 5,730 years. A fossil originally had 254 grams of Carbon-14, but currently has 127 grams of carbon-14. The fossil is most likely
ringing a bell transfers mechanical energy to sound energy
A candle directly transforms chemical energy into light energy as it burns
32.0 g
5,730 years old
An unstable atom that emits gamma rays is used in radiation therapy to treat cancer
The reaction is fission, and energy is released
One small atom merging with particles to steadily become larger
Krypton (36 p, 53 n) and Barium (56 p, 88 n)
Which of these statements is true about how light energy is produced
ringing a bell transfers mechanical energy to sound energy
A candle directly transforms chemical energy into light energy as it burns
32.0 g
5,730 years old
An unstable atom that emits gamma rays is used in radiation therapy to treat cancer
The reaction is fission, and energy is released
One small atom merging with particles to steadily become larger
Krypton (36 p, 53 n) and Barium (56 p, 88 n)
Which description best matches nuclear fusion?
ringing a bell transfers mechanical energy to sound energy
A candle directly transforms chemical energy into light energy as it burns
32.0 g
5,730 years old
An unstable atom that emits gamma rays is used in radiation therapy to treat cancer
The reaction is fission, and energy is released
One small atom merging with particles to steadily become larger
Krypton (36 p, 53 n) and Barium (56 p, 88 n)
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