1. Which of the following correctly identifies the composition of an oxygen atom? (1 point)
8 protons, 8 electrons, and 8 neutrons
6 protons, 6 electrons, and 6 neutrons
8 protons, 6 electrons, and 7 neutrons
6 protons, 6 electrons, and 12 neutrons
2. Which of the following describes the difference between nitrogen-14 and nitrogen-15? (1 point)
Nitrogen-14 has 14 electrons, 14 protons, and 14 neutrons; nitrogen-15 has 15 electrons, 15 protons, and 15 neutrons.
Nitrogen-14 has 7 electrons, 7 protons, and 7 neutrons; nitrogen-15 has 8 electrons, 8 protons, and 8 neutrons.
Nitrogen-14 has 14 electrons, 14 protons, and 14 neutrons; nitrogen-15 has 14 electrons, 14 protons, and 15 neutrons.
Nitrogen-14 has 7 electrons, 7 protons, 7 neutrons; nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons.
3. Which of the following statements is true? (1 point)
Atoms exist in more types than molecules do.
Molecules result when atoms lose electrons.
Atoms bond with one another in a molecule.
Molecules result when atoms acquire extra neutrons.
4. Which of the following characterizes an ionic bond? (1 point)
The electrons in the bond are shared between two atoms.
The electrons in the bond are shared between two ions.
The bond results from the attractive forces of two similar charges.
The bond results from the attractive forces of two opposite charges.
5. Which of the following statements about the compound HCl is true? (1 point)
The physical and chemical properties of HCl are different from those of H2 and Cl2.
Only the physical properties of HCl are different from those of H2 and Cl2.
Only the chemical properties of HCl are different from those of H2 and Cl2.
The physical and chemical properties of HCl are the same as those of H2 and Cl2.
My Answers:
1.A
2.D
3.C
4.D
5.C
Am i right?
1.A
2.D
3.C
4.D
5.A
i just took this test all of em are right but #5 that's A :)
I agree with Harley. All are right except 5 and that should be A.
By the way, putting those answer at the END is a sure way to keep me from looking at posts. Why not place an asterisk (one or more) on the choice THEN we wont need to scroll to the end to get the answer, scroll back to see what the choices are, forget what you chose, scroll down again, etc etc.
Hmm, 5 is A.
Let's go through each question and its answer choices to determine whether your answers are correct:
1. The correct answer is the one that correctly identifies the composition of an oxygen atom. An oxygen atom has 8 protons, 8 electrons, and 8 neutrons. Therefore, the correct answer is: 8 protons, 8 electrons, and 8 neutrons. Your answer, choice A, is correct.
2. The question asks about the difference between nitrogen-14 and nitrogen-15. Nitrogen-14 has 7 electrons, 7 protons, and 7 neutrons, while nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons. Therefore, the correct answer is: Nitrogen-14 has 7 electrons, 7 protons, and 7 neutrons; nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons. Your answer, choice D, is correct.
3. The question asks which statement is true. The correct statement is: Atoms bond with one another in a molecule. Your answer, choice C, is indeed correct.
4. The question asks for the characteristic of an ionic bond. An ionic bond results from the attractive forces of two opposite charges. Therefore, the correct answer is: The bond results from the attractive forces of two opposite charges. Your answer, choice D, is correct.
5. The question asks about the compound HCl. The statement that is true is: Only the chemical properties of HCl are different from those of H2 and Cl2. Your answer, choice C, is correct.
Based on the explanations above, your answers are correct for all the questions. Well done!