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Explain the difference between an isotope and a radioisotope.
Explain the difference between an isotope and a radioisotope.
An isotope is a variation of an element that has the same number of protons but a different number of neutrons. A radioisotope is an isotope that is radioactive, meaning it decays and emits radiation.
Calculation the value of a 100g sample of a radioactive substance has a half-life of 5 years. How much of the substance remains radioactive after 15 years? Answer: 12.5g
Calculation the value of a 100g sample of a radioactive substance has a half-life of 5 years. How much of the substance remains radioactive after 15 years? Answer: 12.5g
12.5g
What is Alpha Decay? A type of radioactive decay where an alpha particle is emitted, reducing the atomic number by 2 and mass number by 4.
What is Alpha Decay? A type of radioactive decay where an alpha particle is emitted, reducing the atomic number by 2 and mass number by 4.
Alpha decay is a type of radioactive decay where an alpha particle, which is composed of two protons and two neutrons, is emitted from the nucleus of a radioactive atom.
After 2 trials in the M&M lab, 25 M&M's remain. If each trial represents one half-life, how many M&M's would be present after 5 half-lives?
After 2 trials in the M&M lab, 25 M&M's remain. If each trial represents one half-life, how many M&M's would be present after 5 half-lives?
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Based on the graph estimate the half-life of Mercury 203.
Based on the graph estimate the half-life of Mercury 203.
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If each trial represents 4.2 years, what is the half-life of the red M&M’s?
If each trial represents 4.2 years, what is the half-life of the red M&M’s?
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Suppose you start with 100 grams of red M&M’s. How much remains after 12.6 years? Answer: 5 grams.
Suppose you start with 100 grams of red M&M’s. How much remains after 12.6 years? Answer: 5 grams.
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Describe the relationship between the parent material and the daughter material over time. Answer: As the parent material decreases due to radioactive decay, the daughter material increases proportionally.
Describe the relationship between the parent material and the daughter material over time. Answer: As the parent material decreases due to radioactive decay, the daughter material increases proportionally.
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The half-life of radium-222 is 38 seconds. If you have a 12-gram sample, how much remains after 114 seconds? Answer: 1.5 grams.
The half-life of radium-222 is 38 seconds. If you have a 12-gram sample, how much remains after 114 seconds? Answer: 1.5 grams.
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Matter cannot be created or destroyed in a chemical reaction. Therefore, the number of each type of atom must be the same on both sides of a chemical equation.
Matter cannot be created or destroyed in a chemical reaction. Therefore, the number of each type of atom must be the same on both sides of a chemical equation.
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What are reactants and products? Substances on the left side of the equation are reactants, and those on the right side are products.
What are reactants and products? Substances on the left side of the equation are reactants, and those on the right side are products.
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What are coefficients? Numbers placed before compounds to balance the equation.
What are coefficients? Numbers placed before compounds to balance the equation.
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What are diatomic molecules? Elements that exist as two atoms bonded together in their natural form (e.g., H2, O2, N2).
What are diatomic molecules? Elements that exist as two atoms bonded together in their natural form (e.g., H2, O2, N2).
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What are binary compounds? Compounds composed of two different elements (e.g., NaCl, H2O).
What are binary compounds? Compounds composed of two different elements (e.g., NaCl, H2O).
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