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- 1. Multiple Choice
Which statement accurately describes the atoms of a specific element?
An Indium (In) atom contains 115 protons inside the nucleus, and 49 neutrons outside the nucleus
A Scandium (Sc) atom contains 45 electrons outside the nucleus, and 21 neutrons inside the nucleus
An Aluminum (Al) atom contains 27 electrons and 27 protons inside the nucleus
A Zinc (Zn) atom contains 30 protons inside the nucleus, and 30 electrons outside the nucleus
- 2. Multiple Choice
Which statement correctly describes the location and charge of the electrons in an atom?
Electrons are located inside the nucleus and have no charge
Electrons are located outside the nucleus and have no charge
Electrons are located inside the nucleus and have a negative charge
Electrons are located outside the nucleus and have a negative charge
- 3. Multiple Choice
What is the total number of protons, neutrons, and electrons in a Cadmium atom if that has a mass number of 112
112
48
64
160
- 4. Multiple Choice
What is the difference between the number of electrons in an atom of Selenium (Se) which has an atomic number of 34, and the number of electrons in an atom of Aluminum (Al) which has an atomic number of 13
there is no difference
21
there is not enough information to answer this question
47
- 5. Multiple Choice
How many protons, neutrons, and electrons are present in an atom of Hafnium (Hf) with a mass number of 178
72 protons, 178 neutrons, 106 electrons
72 protons, 106 neutrons, 72 electrons
178 protons, 250 neutrons, 72 electrons
106 protons, 72 neutrons, 106 electrons
- 6. Multiple Choice
An atom of a certain element has 36 protons, 36 electrons, and a mass number of 84. At room temperature this element is a very stable gas. How many neutrons are in this atom?
36
84
72
48
- 7. Multiple Choice
In the early 1900's many scientists thought that an atom consisted of a positive substance with negative charges scattered throughout the substance. Then Earnest Rutherford completed an experiment that changed the concept of an atom. His discovery led to the understanding that an atom consists mostly of empty space with _________.
protons orbiting a dense nucleus made of electrons
electrons orbiting a dense nucleus made of protons and neutrons
neutrons and protons orbiting a cloud of electrons
electrons and protons orbiting a cloud of neutrons
- 8. Multiple Choice
What types of particles are found in the cloud surrounding the atom's nucleus?
Positively charged particles and negatively charged particles
Negatively charged particles only
Neutral particles and positively charged particles
Positively charged particles only
- 9. Multiple Choice
What is the mass of Potassium (K) atom that has 20 neutrons
18
19
20
39
- 10. Multiple Choice
Which of the following best describes an electron?
It has no charge and about the same mass as a proton
It has a negative charge and much less mass than a proton
It has a positive charge and much more mass than a neutron
It has a negative charge and about the same mass as a neutron
- 11. Multiple Choice
An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the atom's nucleus?
+25
+30
-25
-30
- 12. Multiple Choice
Which statement accurately describes the atoms of a specific element?
An Oxygen (O) atom contains 8 protons inside the nucleus, and 8 neutrons outside the nucleus
A Beryllium (Be) atom contains 4 electrons outside the nucleus, and 5 neutrons inside the nucleus
An Aluminum (Al) atom contains 27 electrons and 27 protons inside the nucleus
A Zinc (Zn) atom contains 30 protons inside the nucleus, and 31 electrons outside the nucleus
- 13. Multiple Choice
Which of the following best describes a proton?
It has no charge and makes up part of the mass in an atom
It has a negative charge and makes up part of the mass in an atom
It has a positive charge and makes up part of the mass in an atom
tacos, always tacos
- 14. Multiple Choice
An atom of a certain element has 19 protons, 19 electrons, and a mass number of 39. At room temperature this element is not a very stable. How many neutrons are in this atom?
36
84
72
20
- 15. Multiple Choice
What types of particles are found inside the nucleus surrounded by the atom's cloud?
Positively charged particles and negatively charged particles
Negatively charged particles only
Neutral particles and positively charged particles
Positively charged particles only
- 16. Multiple Choice
What is the difference between the number of electrons in an atom of Tin (Sn) which has an atomic number of 50, and the number of electrons in an atom of Chlorine (Cl) which has an atomic number of 17.
there is no difference
33
there is not enough information to answer this question
47
- 17. Multiple Choice
Which statement accurately describes the atoms of a specific element?
Helium (He) atom contains 2 protons inside the nucleus, and 2 neutrons outside the nucleus
Helium (He) atom contains 2 protons outside the nucleus, and 2 neutrons outside the nucleus
Helium (He) atom contains 2 protons inside the nucleus, and 2 neutrons inside the nucleus
WHY are all the answers the same?!?
- 18. Multiple Choice
What is the mass of an Osmium (Os) atom that has 76 neutrons and 76 electrons
18
19
20
190
- 19. Multiple Choice
Where does the mass of an atom come from?
Protons and neutrons inside the nucleus
Protons and neutrons outside the nucleus
Protons and electrons inside the nucleus
Protons and electrons outside the nucleus
- 20. Multiple Choice
Where does the volume of an atom come from?
Protons and neutrons outside the nucleus
Protons outside the nucleus
Protons and electrons inside the nucleus
Electrons outside the nucleus
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