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im confused with this question: i thought atoms A and B were isotopes since both of them have the number of proto...
Isotopes have _____ a. the same number of protons but different numbers of electrons. b. the...
Isotopes have _____ a. the same number of protons but different numbers of electrons. b. the same number of neutrons but a different number of protons. c. the same total number of protons and neutrons. d. the same number of protons but a different number of neutrons. e. the same atomic mass. Identify the element based on the following values for its three isotopes: 38.9637 amu (93.08%), 39.9640 amu (0.012%), and 40.9618 amu (6.91%). a. Cl b. Ar c. S...
Ul Tuise. iSUlBpes are atoms of the same element that have the same atomic number but different mass numbers. A. True B. False 9. The table below describes four atoms. Atom B 81 120 81 Atom C 80 1...
Ul Tuise. iSUlBpes are atoms of the same element that have the same atomic number but different mass numbers. A. True B. False 9. The table below describes four atoms. Atom B 81 120 81 Atom C 80 118 80 Atom D 79 120 79 Atom A 79 118 79 Number of protons Number of neutrons Number of electrons Which atoms represent the same element?
Ul Tuise. iSUlBpes are atoms of the same element that have the same atomic number...
B) Theories must be testable; hypotheses do not need to be testable. CHypotheses are educated guesses,...
B) Theories must be testable; hypotheses do not need to be testable. CHypotheses are educated guesses, and theories are tentative explanations. D) Hypotheses are derived from experimentation, whereas theories are derived from observation. 12) A) Water is an example of an element. B Nitrogen C) Glucose D) Salt 13) What are the four most common elements found in living organisms? A) nitrogen, oxygen, phosphorus, and carbon carbon, oxygen, nitrogen, and hydrogen C) carbon, oxygen, potassium, and calcium D) oxygen, calcium,...
1) Which statement concerning the structure of the atom is correct A) Protons and Neutrons have...
1) Which statement concerning the structure of the atom is correct A) Protons and Neutrons have most of the mass and occupy C) Electron have most of the mass and occupy very little of the volume of the atom B) Electron have most of the mass and occupy most of the volume of the atom most of the volwne of D) Protons and Neutrons have most of the mass but occupy very little of the volume of the atom 2)...
Are the basic units of matter: a) Elements b) Atoms c) Electrons d) Protons e) Neutrons...
Are the basic units of matter: a) Elements b) Atoms c) Electrons d) Protons e) Neutrons Has a negative charge: a) Elements b) Atoms c) Electrons d) Protons e) Neutrons Whether an atom will interact with other atoms depends on how many electrons it has. a) True b) False How many electrons are in the second orbital of an atom? a) 2 b) 6 c) 8 d) 4 e) 10 How many Hydrogen atoms does a water molecule have? a)...
Boron has atomic number 5. It comprises two isotopes, one with five neutrons, the other with...
Boron has atomic number 5. It comprises two isotopes, one with five neutrons, the other with six. a) Define the term "isotope". b) Calculate the mass numbers of the two isotopes and represent them in the form In naturally occurring boron, 20% of the atoms contain five neutrons and 80% six neutrons. Calculate relative atomic mass of boron. Given the atomic numbers of the following elements, write their simple electronic structures: a) Beryllium (AL No.24) b) Aluminium (At. No. 13)...
Quiz #1A Name Good Luck 1. What term is used to describe atoms of the same...
Quiz #1A Name Good Luck 1. What term is used to describe atoms of the same element that have different A. radioactive B. constituents C_isotopes D. telomers E. isomers 2. What is always true for a neutral atom? 5 pts masses? 5 pts A. There is an equal number of protons and neutroes. C. There is an equal number of protons, neutrons, and electrons. D. The namber of protons B_There is an equal number of prosons and clectrons E. The...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons . Which of the following would have the largest size? a) an atom b) a molecule c) a proton d) a neutron e) an electron 3. Isotopes of an element differ in the number of a) protons in the nucleus b) electrons in the nucleus © neutrons in the nucleus d) electron clouds e) energy levels they contain 4. VO The atomic number represents...
20) Which statement is NOT true about ionic bonds? A) An ionic bond occurs between positive...
20) Which statement is NOT true about ionic bonds? A) An ionic bond occurs between positive ions and negative ions. B) Electrons are completely lost or gained in ion formation An ion has the same number of electrons as a nonionic atom of the same element. D) A salt such as NaCl is formed by an ionic reaction. 21) Which of the following would be a proposed mechanism by which stomach antacids work? A) Antacids are bases and by definition...
(12. Which of these is a chemical property ? a. Helium is very nonreactive b. Sodium...
(12. Which of these is a chemical property ? a. Helium is very nonreactive b. Sodium is a soft shiny metal. c. Water has a high specific heat. d. Glycerol is a viscous liquid. .e. Ice melts at 0°C. 13. Which of these is an element? water-compound b. iron ore wood compound d. silver element e. brass 14. Water is an example of a. a homogeneous mixture b. a heterogeneous mixture c. a compound 2 or more atoms form chemical...
Isotopes have _____ a. the same number of protons but different numbers of electrons. b. the same number of neutrons but a different number of protons. c. the same total number of protons and neutrons. d. the same number of protons but a different number of neutrons. e. the same atomic mass. Identify the element based on the following values for its three isotopes: 38.9637 amu (93.08%), 39.9640 amu (0.012%), and 40.9618 amu (6.91%). a. Cl b. Ar c. S...
Ul Tuise. iSUlBpes are atoms of the same element that have the same atomic number but different mass numbers. A. True B. False 9. The table below describes four atoms. Atom B 81 120 81 Atom C 80 118 80 Atom D 79 120 79 Atom A 79 118 79 Number of protons Number of neutrons Number of electrons Which atoms represent the same element?
Ul Tuise. iSUlBpes are atoms of the same element that have the same atomic number...
B) Theories must be testable; hypotheses do not need to be testable. CHypotheses are educated guesses, and theories are tentative explanations. D) Hypotheses are derived from experimentation, whereas theories are derived from observation. 12) A) Water is an example of an element. B Nitrogen C) Glucose D) Salt 13) What are the four most common elements found in living organisms? A) nitrogen, oxygen, phosphorus, and carbon carbon, oxygen, nitrogen, and hydrogen C) carbon, oxygen, potassium, and calcium D) oxygen, calcium,...
1) Which statement concerning the structure of the atom is correct A) Protons and Neutrons have most of the mass and occupy C) Electron have most of the mass and occupy very little of the volume of the atom B) Electron have most of the mass and occupy most of the volume of the atom most of the volwne of D) Protons and Neutrons have most of the mass but occupy very little of the volume of the atom 2)...
Are the basic units of matter: a) Elements b) Atoms c) Electrons d) Protons e) Neutrons Has a negative charge: a) Elements b) Atoms c) Electrons d) Protons e) Neutrons Whether an atom will interact with other atoms depends on how many electrons it has. a) True b) False How many electrons are in the second orbital of an atom? a) 2 b) 6 c) 8 d) 4 e) 10 How many Hydrogen atoms does a water molecule have? a)...
Boron has atomic number 5. It comprises two isotopes, one with five neutrons, the other with six. a) Define the term "isotope". b) Calculate the mass numbers of the two isotopes and represent them in the form In naturally occurring boron, 20% of the atoms contain five neutrons and 80% six neutrons. Calculate relative atomic mass of boron. Given the atomic numbers of the following elements, write their simple electronic structures: a) Beryllium (AL No.24) b) Aluminium (At. No. 13)...
Quiz #1A Name Good Luck 1. What term is used to describe atoms of the same element that have different A. radioactive B. constituents C_isotopes D. telomers E. isomers 2. What is always true for a neutral atom? 5 pts masses? 5 pts A. There is an equal number of protons and neutroes. C. There is an equal number of protons, neutrons, and electrons. D. The namber of protons B_There is an equal number of prosons and clectrons E. The...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons . Which of the following would have the largest size? a) an atom b) a molecule c) a proton d) a neutron e) an electron 3. Isotopes of an element differ in the number of a) protons in the nucleus b) electrons in the nucleus © neutrons in the nucleus d) electron clouds e) energy levels they contain 4. VO The atomic number represents...
20) Which statement is NOT true about ionic bonds? A) An ionic bond occurs between positive ions and negative ions. B) Electrons are completely lost or gained in ion formation An ion has the same number of electrons as a nonionic atom of the same element. D) A salt such as NaCl is formed by an ionic reaction. 21) Which of the following would be a proposed mechanism by which stomach antacids work? A) Antacids are bases and by definition...
(12. Which of these is a chemical property ? a. Helium is very nonreactive b. Sodium is a soft shiny metal. c. Water has a high specific heat. d. Glycerol is a viscous liquid. .e. Ice melts at 0°C. 13. Which of these is an element? water-compound b. iron ore wood compound d. silver element e. brass 14. Water is an example of a. a homogeneous mixture b. a heterogeneous mixture c. a compound 2 or more atoms form chemical...
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