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Which of the following statements is true? A. Neutrons are less massive than electrons. O B....
D Question 2 All of the following statements are true EXCEPT O for any neutral element,...
D Question 2 All of the following statements are true EXCEPT O for any neutral element, the number of protons and electrons are equal O the atomic number equals the number of protons. O the mass number is the sum of the number of protons and neutrons O electrons and protons have equal mass, but opposite charges. O isotopes of an element have identical atomic numbers.
65) The nucleus of an atom contains: a) protons and electrons b) just electrons c) electrons and neutrons d) proton...
65) The nucleus of an atom contains: a) protons and electrons b) just electrons c) electrons and neutrons d) protons and neutrons e) neutrons 66) The atomic number of an atom is: a) the number of electrons it has b) the number of neutrons it has c) the number of protons it has d) the number of protons plus the number of neutrons it has e) the combined total of protons, neutrons and electrons that it has 67) In water,...
Which of the following is NOT one of the six elements that make up 95% of...
Which of the following is NOT one of the six elements that make up 95% of the body weight of organisms? OA) Hydrogen OB) Nitrogen Oc) Carbon OD) Iron Which of the following statements is true? OA) All isotopes give off subatomic particles. OB) All isotopes are radioactive. Oc) All isotopes have the same number of protons. OD) All isotopes have the same number of neutrons. What type of bond is formed when atoms share electrons? OA) lonic OB) Covalent...
Atomic number c. Valance electrons d. Orbits e. Neutrons Indicate whether each of the following statements...
Atomic number c. Valance electrons d. Orbits e. Neutrons Indicate whether each of the following statements about atomic structure is true or false. a. A neutral oxygen atom has 8 electrons located in 2 different electron orbitals. T/F b. Hydrogen has only one neutron and no protons in its nucleus. T/F c. Almost all of the mass of an atom is concentrated in its electrons. T/F d. The reactivity or chemical behavior of an atom depends primarily on the number...
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)...
1. An atom of Indium-112 contains 49 protons, 63 neutrons, 49 electrons. b. 49 protons, 49...
1. An atom of Indium-112 contains 49 protons, 63 neutrons, 49 electrons. b. 49 protons, 49 neutrons, 49 electrons. c. 49 protons, 49 alpha particles d. 49 protons, 63 neutrons. 2. Which of the following atomic symbols is incorrect? d. 3. How many atoms of hydrogen are present in 6.43 g of NH? a. 2.27 x 10 b. 1.28 x 10 1.16x 10 d. 6.82 10 4. A 2.55 ml sample of ethylene glycol antifreeze) has a mass of 2.83...
Determine the number of protons, neutrons, and electrons in each of the following species: a)^52Cr; b)^112Cd;...
Determine the number of protons, neutrons, and electrons in each of the following species: a)^52Cr; b)^112Cd; c)^137Ba^2+; d)^63Cu^+; e)^55Fe^3+
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...
Lemon juice has a high pH. A. True B. False Which subatomic particle(s) orbit the nucleus?...
Lemon juice has a high pH. A. True B. False Which subatomic particle(s) orbit the nucleus? A. protons B. neutrons C. electrons D. More than one of the above answers are correct. Molecules that are attracted to water are called ______. A. solvents B. hydrophilic C. hydrophobic D. nonpolar The ability of an organism to maintain a stable internal environment is called __________. A. homeostasis B. denaturation C. replication D. natural selection Ionic bonding occurs when _________. A. two molecules...
17. Identify the elements that have the following electron arrangements: b. 2,8,6 а. 2,4 c. 2,8,8...
17. Identify the elements that have the following electron arrangements: b. 2,8,6 а. 2,4 c. 2,8,8 d. 2,1 f. 2,8, е. 2,8 g. 2,8,8,2 18. Write the group number and draw the electron-dot symbol for each of the following elements: a. sulfur b. nitrogen c. calcium d. sodium 19. The atomic number of an atom is equal to the number of A) neutrons plus protons B) nuclei C) electrons plus protons E) neutrons D) protons 20. The number of neutrons...
D Question 2 All of the following statements are true EXCEPT O for any neutral element, the number of protons and electrons are equal O the atomic number equals the number of protons. O the mass number is the sum of the number of protons and neutrons O electrons and protons have equal mass, but opposite charges. O isotopes of an element have identical atomic numbers.
65) The nucleus of an atom contains: a) protons and electrons b) just electrons c) electrons and neutrons d) protons and neutrons e) neutrons 66) The atomic number of an atom is: a) the number of electrons it has b) the number of neutrons it has c) the number of protons it has d) the number of protons plus the number of neutrons it has e) the combined total of protons, neutrons and electrons that it has 67) In water,...
Which of the following is NOT one of the six elements that make up 95% of the body weight of organisms? OA) Hydrogen OB) Nitrogen Oc) Carbon OD) Iron Which of the following statements is true? OA) All isotopes give off subatomic particles. OB) All isotopes are radioactive. Oc) All isotopes have the same number of protons. OD) All isotopes have the same number of neutrons. What type of bond is formed when atoms share electrons? OA) lonic OB) Covalent...
Atomic number c. Valance electrons d. Orbits e. Neutrons Indicate whether each of the following statements about atomic structure is true or false. a. A neutral oxygen atom has 8 electrons located in 2 different electron orbitals. T/F b. Hydrogen has only one neutron and no protons in its nucleus. T/F c. Almost all of the mass of an atom is concentrated in its electrons. T/F d. The reactivity or chemical behavior of an atom depends primarily on the number...
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)...
1. An atom of Indium-112 contains 49 protons, 63 neutrons, 49 electrons. b. 49 protons, 49 neutrons, 49 electrons. c. 49 protons, 49 alpha particles d. 49 protons, 63 neutrons. 2. Which of the following atomic symbols is incorrect? d. 3. How many atoms of hydrogen are present in 6.43 g of NH? a. 2.27 x 10 b. 1.28 x 10 1.16x 10 d. 6.82 10 4. A 2.55 ml sample of ethylene glycol antifreeze) has a mass of 2.83...
Determine the number of protons, neutrons, and electrons in each of the following species: a)^52Cr; b)^112Cd; c)^137Ba^2+; d)^63Cu^+; e)^55Fe^3+
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...
Lemon juice has a high pH. A. True B. False Which subatomic particle(s) orbit the nucleus? A. protons B. neutrons C. electrons D. More than one of the above answers are correct. Molecules that are attracted to water are called ______. A. solvents B. hydrophilic C. hydrophobic D. nonpolar The ability of an organism to maintain a stable internal environment is called __________. A. homeostasis B. denaturation C. replication D. natural selection Ionic bonding occurs when _________. A. two molecules...
17. Identify the elements that have the following electron arrangements: b. 2,8,6 а. 2,4 c. 2,8,8 d. 2,1 f. 2,8, е. 2,8 g. 2,8,8,2 18. Write the group number and draw the electron-dot symbol for each of the following elements: a. sulfur b. nitrogen c. calcium d. sodium 19. The atomic number of an atom is equal to the number of A) neutrons plus protons B) nuclei C) electrons plus protons E) neutrons D) protons 20. The number of neutrons...
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