Chapter 2Atoms: Are They for Real?
James A. Noblet
California State University
San Bernardino, CA
2007 Prentice Hall
Chemistry for Changing Times, 11th edition
John W. Hill and Doris K. Kolb
The term atom comes from the Greek word atomos, which means:
1. Very small
2. Cannot be seen
3. Cannot be cut
4. Basis
5. Reactive
The term atom comes from the Greek word atomos, which means:
1. Very small
2. Cannot be seen
3. Cannot be cut
4. Basis
5. Reactive
The fact that 4g of hydrogen (H2) reacts with 32g of oxygen (O2) to give 36g of water is an illustration of what law?
1. Conservation of mass
2. Law of definite proportions
3. Law of multiple proportions
4. Law of combining elements
5. The periodic law
The fact that 4g of hydrogen (H2) reacts with 32g of oxygen (O2) to give 36g of water is an illustration of what law?
1. Conservation of mass
2. Law of definite proportions
3. Law of multiple proportions
4. Law of combining elements
5. The periodic law
The tarnish on silverware is primarily silver sulfide, which always forms with a 2:1 ratio of Ag to S. This an example
of what principle?
1. Conservation of mass
2. Law of definite proportions
3. Law of multiple proportions
4. Law of combining elements
5. The periodic law
The tarnish on silverware is primarily silver sulfide, which always forms with a 2:1 ratio of Ag to S. This an example
of what principle?
1. Conservation of mass
2. Law of definite proportions
3. Law of multiple proportions
4. Law of combining elements
5. The periodic law
Carbon and oxygen can react to form carbon monoxide (CO) or carbon dioxide (CO2) depending on the amount of
oxygen available. This illustrates which law?
1. Conservation of mass
2. Law of definite proportions
3. Law of multiple proportions
4. Law of combining elements
5. The periodic law
Carbon and oxygen can react to form carbon monoxide (CO) or carbon dioxide (CO2) depending on the amount of
oxygen available. This illustrates which law?
1. Conservation of mass
2. Law of definite proportions
3. Law of multiple proportions
4. Law of combining elements
5. The periodic law
Mendeleev arranged the elements in his early periodic table primarily according to what criterion?
1. Similar physical properties
2. Similar chemical properties
3. Decreasing atomic masses
4. Similar appearance
5. Natural abundance
Mendeleev arranged the elements in his early periodic table primarily according to what criterion?
1. Similar physical properties
2. Similar chemical properties
3. Decreasing atomic masses
4. Similar appearance
5. Natural abundance