19. The symbol for the element, tin, is Ti.
a. True
*b. False
Answer: b
Learning objective 1.4 - explain the basis of the periodic table of the elements.
20. Carbon has a higher atomic number than copper.
a. True
*b. False
Answer: b
Learning objective 1.4 - explain the basis of the periodic table of the elements.
21. The element, rutherfordium (Rf), was discovered by Ernest Rutherford.
a. True
*b. False
Answer: b
Learning objective 1.4 - explain the basis of the periodic table of the elements.
22. The element, erbium (Er), was named after the Swedish town of Ytterby.
*a. True
b. False
Answer: a
Learning objective 1.4 - explain the basis of the periodic table of the elements.
Multiple-choice questions
23. Which of the following is NOT a subatomic particle?
a. Proton
*b. Boron
c. Electron
d. Neutron
Answer: b
Learning objective 1.3 - describe the structure of the atom.
24. Which of the following subatomic particles is positively charged?
*a. Proton
b. Neutron
c. Electron
d. All of the above
Answer: a
Learning objective 1.3 - describe the structure of the atom.
25. Which of the following subatomic particles is negatively charged?
a. Proton
b. Neutron
*c. Electron
d. All of the above
Answer: c
Learning objective 1.3 - describe the structure of the atom.
26. Which of the following contributes to the charge but does NOT contribute significantly to the mass of an atom?
*a. Electron
b. Neutron
c. Proton
d. Photon
Answer: a
Learning objective 1.3 - describe the structure of the atom.
27. Polonium exists in nature in the form of several isotopes; the different isotopes have different:
a. atomic numbers.
b. charges.
c. numbers of protons.
*d. numbers of neutrons.
Answer: d
Learning objective 1.3 - describe the structure of the atom.
28. Which answer below best describes all atoms of a given isotope of a particular element?
a. They posses the same number of neutrons.
b. They possess the same number of electrons.
c. They possess the same numbers of protons.
*d. All of the above.
Answer: d
Learning objective 1.3 - describe the structure of the atom.
29. Which answer below best describes all atoms of a particular element?
a. They possess the same atomic mass, the same number of electrons, the same atomic number, but nothing else in common.
*b. They possess the same number of electrons, the same atomic number, the same chemical properties, but not necessarily the same mass.
c. They possess the same chemical properties and the same mass, but nothing else in common.
d. They possess the same atomic number and the same mass, but have nothing else in common.
Answer: b
Learning objective 1.3 - describe the structure of the atom.
30. Which atom shown below has 24 neutrons?
a.
b.
c.
*d.
Answer: d
Learning objective 1.3 - describe the structure of the atom.
31. Which atom shown below has 24 protons?
*a.
b.
