Isotopes quiz #1 Flashcards
Isotopes quiz #1
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One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope?
The mass number is the sum of protons and neutrons. For this sodium isotope, it is 11 + 7 = 18. How many neutrons does lithium have if its mass number is 7 and its atomic number is 3?
Lithium has 7 - 3 = 4 neutrons. How many neutrons does potassium have if its mass number is 39 and its atomic number is 19?
Potassium has 39 - 19 = 20 neutrons. Which of these refers to atoms with the same atomic number but different atomic masses? Options: A) Isotopes B) Ions C) Molecules D) Compounds
A) Isotopes How many neutrons make up one of these potassium atoms with a mass number of 39?
Potassium has 39 - 19 = 20 neutrons. How many neutrons does sodium have if its mass number is 23 and its atomic number is 11?
Sodium has 23 - 11 = 12 neutrons. How many neutrons are in the nucleus of a potassium atom with a mass number of 39?
Potassium has 39 - 19 = 20 neutrons. How many neutrons does carbon have if its mass number is 12 and its atomic number is 6?
Carbon has 12 - 6 = 6 neutrons. An atom with an atomic number of 12 and a mass number of 25 can best be described by which of these? Options: A) Magnesium-25 B) Sodium-25 C) Aluminum-25 D) Silicon-25
A) Magnesium-25 An isotope of sodium (Na) has a mass number of 22. How many neutrons does it have?
Sodium has 22 - 11 = 11 neutrons. An atom's mass number is 13 and its atomic number is 6. How many neutrons are in its nucleus?
The atom has 13 - 6 = 7 neutrons. Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct? Options: A) They have different numbers of protons. B) They have the same number of neutrons. C) They have the same atomic number. D) They have different chemical properties.
C) They have the same atomic number. What is the difference between diploid and haploid?
Diploid cells contain two complete sets of chromosomes, while haploid cells contain only one set. How many neutrons make up one of these potassium atoms? Options: A) 19 B) 20 C) 38 D) 58
B) 20 What is the mass number of an atom of potassium that has 20 neutrons?
The mass number is 19 (protons) + 20 (neutrons) = 39. How many neutrons does this atom have if its mass number is 14 and its atomic number is 6?
The atom has 14 - 6 = 8 neutrons. What are the atomic number and mass number for the carbon isotope with seven neutrons?
The atomic number is 6, and the mass number is 6 + 7 = 13. How many neutrons do potassium-39 and potassium-40 have?
Potassium-39 has 20 neutrons, and potassium-40 has 21 neutrons. How many neutrons are in this lithium atom if its mass number is 7 and its atomic number is 3?
Lithium has 7 - 3 = 4 neutrons. How many protons are present in an atom of potassium-29?
Potassium has 19 protons. What is the difference between a diploid cell and a haploid cell?
Diploid cells have two sets of chromosomes, while haploid cells have one set. How many neutrons does nitrogen-15 have?
Nitrogen-15 has 15 - 7 = 8 neutrons. How many neutrons does magnesium have if its mass number is 24 and its atomic number is 12?
Magnesium has 24 - 12 = 12 neutrons. What element would have a mass number of 7 and 3 protons?
The element is lithium. What is the diploid number of chromosomes in corn?
The diploid number of chromosomes in corn is 20. How many neutrons are in sodium if its mass number is 23 and its atomic number is 11?
Sodium has 23 - 11 = 12 neutrons. The haploid number of sphagnum moss is 19. What is its diploid number?
The diploid number is 19 x 2 = 38. How many neutrons does an atom of sodium-23 have? The symbol for sodium is Na.
Sodium-23 has 23 - 11 = 12 neutrons. Which of the following is the least abundant immunoglobulin (Ig)? Options: A) IgA B) IgD C) IgE D) IgG
C) IgE Which of the following isotopes has the same number of neutrons as phosphorus-31? Options: A) Sulfur-32 B) Silicon-30 C) Chlorine-35 D) Argon-40
B) Silicon-30 How many neutrons are in an atom of carbon-12?
Carbon-12 has 12 - 6 = 6 neutrons. How many neutrons does sodium (Na) have if its mass number is 23 and its atomic number is 11?
Sodium has 23 - 11 = 12 neutrons. How many neutrons are in a lithium atom if its mass number is 7 and its atomic number is 3?
Lithium has 7 - 3 = 4 neutrons. The atomic number of nitrogen is 7. What is the mass number of a nitrogen atom with 6 neutrons?
The mass number is 7 + 6 = 13. What is the haploid number of chromosomes in corn?
The haploid number of chromosomes in corn is 10. How many neutrons are in an atom of lithium if its mass number is 7 and its atomic number is 3?
Lithium has 7 - 3 = 4 neutrons. How many neutrons are in an atom of sodium that has a mass number of 23?
Sodium has 23 - 11 = 12 neutrons. What element is usually used to date fossils?
Carbon is usually used to date fossils. Which of the following statements about isotopes is true? Options: A) Isotopes have different numbers of protons. B) Isotopes have the same mass number. C) Isotopes have different numbers of neutrons. D) Isotopes have different chemical properties.
C) Isotopes have different numbers of neutrons. How many neutrons does nitrogen have if its mass number is 14 and its atomic number is 7?
Nitrogen has 14 - 7 = 7 neutrons.
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