Chapter 1: The atom
True/False questions
1. Removing an electron from a sodium atom (Na) gives the Na – anion.
a. True
*b. False
Answer: b
Learning objective 1.1 - define atoms, molecules, ions, elements and compounds.
2. Adding an electron to a fluorine atom (F) gives the F– anion.
*a. True
b. False
Answer: a
Learning objective 1.1 - define atoms, molecules, ions, elements and compounds.
3. In a chemical reaction, no detectable gain or loss of mass occurs.
*a. True
b. False
Answer: a
Learning objective 1.2 - explain how the concept of atoms developed.
4. In Dalton’s atomic theory, atoms are destructible and can be broken down into separate parts.
a. True
*b. False
Answer: b
Learning objective 1.2 - explain how the concept of atoms developed.
5. In a given chemical compound, the elements are always combined in the same proportions by mass.
*a. True
b. False
Answer: a
Learning objective 1.2 - explain how the concept of atoms developed.
6. The charge of an electron was determined by Ernest Rutherford.
a. True
*b. False
Answer: b
Learning objective 1.3 - describe the structure of the atom.
7. Protons are positively charged subatomic particles.
*a. True
b. False
Answer: a
Learning objective 1.3 - describe the structure of the atom.
8. Neutrons are negatively charged subatomic particles.
a. True
*b. False
Answer: b
Learning objective 1.3 - describe the structure of the atom.
9. All atoms possess the same number of protons, but are distinguished by the difference in the number of electrons.
a. True
*b. False
Answer: b
Learning objective 1.3 - describe the structure of the atom.
10. All carbon atoms possess the same number of protons, but are distinguished by the difference in the number of neutrons.
*a. True
b. False
Answer: a
Learning objective 1.3 - describe the structure of the atom.
11. All carbon atoms possess the same atomic number, but are distinguished by the difference in the number of protons.
a. True
*b. False
Answer: b
Learning objective 1.3 - describe the structure of the atom.
12. Mendeleev devised his periodic table by ordering the elements according to their atomic number.
a. True
*b. False
Answer: b
Learning objective 1.4 - explain the basis of the periodic table of the elements.
13. Arsenic has a higher atomic mass than gold.
a. True
*b. False
Answer: b
Learning objective 1.4 - explain the basis of the periodic table of the elements.
14. Sulfur has a higher atomic mass than boron.
*a. True
b. False
Answer: a
Learning objective 1.4 - explain the basis of the periodic table of the elements.
15. Metals are good conductors of heat and electricity.
*a. True
b. False
Answer: a
Learning objective 1.4 - explain the basis of the periodic table of the elements.
16. All gold atoms which exist possess the same number of protons.
*a. True
b. False
Answer: a
Learning objective 1.3 - describe the structure of the atom.
17. The symbol for the element, potassium, is Po.
a. True
*b. False
Answer: b
Learning objective 1.4 - explain the basis of the periodic table of the elements.
18. The symbol for the element, tungsten, is W.
*a. True
b. False
Answer: a
Learning objective 1.4 - explain the basis of the periodic table of the elements.
True/False questions
1. Removing an electron from a sodium atom (Na) gives the Na – anion.
a. True
*b. False
Answer: b
Learning objective 1.1 - define atoms, molecules, ions, elements and compounds.
2. Adding an electron to a fluorine atom (F) gives the F– anion.
*a. True
b. False
Answer: a
Learning objective 1.1 - define atoms, molecules, ions, elements and compounds.
3. In a chemical reaction, no detectable gain or loss of mass occurs.
*a. True
b. False
Answer: a
Learning objective 1.2 - explain how the concept of atoms developed.
4. In Dalton’s atomic theory, atoms are destructible and can be broken down into separate parts.
a. True
*b. False
Answer: b
Learning objective 1.2 - explain how the concept of atoms developed.
5. In a given chemical compound, the elements are always combined in the same proportions by mass.
*a. True
b. False
Answer: a
Learning objective 1.2 - explain how the concept of atoms developed.
6. The charge of an electron was determined by Ernest Rutherford.
a. True
*b. False
Answer: b
Learning objective 1.3 - describe the structure of the atom.
7. Protons are positively charged subatomic particles.
*a. True
b. False
Answer: a
Learning objective 1.3 - describe the structure of the atom.
8. Neutrons are negatively charged subatomic particles.
a. True
*b. False
Answer: b
Learning objective 1.3 - describe the structure of the atom.
9. All atoms possess the same number of protons, but are distinguished by the difference in the number of electrons.
a. True
*b. False
Answer: b
Learning objective 1.3 - describe the structure of the atom.
10. All carbon atoms possess the same number of protons, but are distinguished by the difference in the number of neutrons.
*a. True
b. False
Answer: a
Learning objective 1.3 - describe the structure of the atom.
11. All carbon atoms possess the same atomic number, but are distinguished by the difference in the number of protons.
a. True
*b. False
Answer: b
Learning objective 1.3 - describe the structure of the atom.
12. Mendeleev devised his periodic table by ordering the elements according to their atomic number.
a. True
*b. False
Answer: b
Learning objective 1.4 - explain the basis of the periodic table of the elements.
13. Arsenic has a higher atomic mass than gold.
a. True
*b. False
Answer: b
Learning objective 1.4 - explain the basis of the periodic table of the elements.
14. Sulfur has a higher atomic mass than boron.
*a. True
b. False
Answer: a
Learning objective 1.4 - explain the basis of the periodic table of the elements.
15. Metals are good conductors of heat and electricity.
*a. True
b. False
Answer: a
Learning objective 1.4 - explain the basis of the periodic table of the elements.
16. All gold atoms which exist possess the same number of protons.
*a. True
b. False
Answer: a
Learning objective 1.3 - describe the structure of the atom.
17. The symbol for the element, potassium, is Po.
a. True
*b. False
Answer: b
Learning objective 1.4 - explain the basis of the periodic table of the elements.
18. The symbol for the element, tungsten, is W.
*a. True
b. False
Answer: a
Learning objective 1.4 - explain the basis of the periodic table of the elements.