Learning Objectives:
1. Understand of an atom, including its neutral charge, nucleus, protons, neutrons, and electrons.
2. Recognize that the mass of an atom is determined by the mass of its nucleus.
3. Identify the unique number of protons in the atoms of an element.
4. Define as of two or more bonded atoms.
5. State the numbers and types of atoms in a compound given its or formula.
6. Compare the size of an atom to everyday objects.
7. Differentiate between atoms and molecules.
8. Appreciate the process of constructing, justifying, and revising models in , particularly atomic models.
9. Understand the social, ethical, and cost-related implications of associated with atomic .
Quiz:
1. What is the basic structure of an atom?
a) charged nucleus with negatively charged electrons
b) Negatively charged nucleus with charged electrons
c) Only a charged nucleus
d) Only negatively charged electrons
2. What contributes most to the mass of an atom?
a) Protons
b) Neutrons
c) Electrons
d) Nucleus
3. Each element has a unique number of _____.
a) Neutrons
b) Electrons
c) Protons
d) Nuclei
4. What is ?
a) A group of atoms with a positive charge
b) A group of atoms with a negative charge
c) A group of atoms that are chemically bonded
d) A group of atoms that are physically connected
5. Which of the following represents formula for ?
a) CD
b) CO2
c) CO
d) OC2
6. How does the size of an atom compare to everyday objects?
a) Atoms are larger than everyday objects.
b) Atoms are smaller than everyday objects.
c) Atoms are the same size as everyday objects.
d) It depends on the specific atom and object.
7. What is the main between an atom and a molecule?
a) An atom has a positive charge, while a molecule has a negative charge.
b) An atom is smaller than a molecule.
c) An atom is , while a molecule is of particles.
d) An atom contains protons and neutrons, while a molecule contains only electrons.
8. How are models in science constructed and revised?
a) By using and creativity
b) By collecting additional data and probing new phenomena
c) By following strict guidelines and protocols
d) By relying on personal opinions and beliefs
9. What are the social, ethical, and cost-related implications of atomic technologies?
a) Improved efficiency and reduced costs
b) Enhanced scientific and understanding
c) Creation of like atomic bombs
d) Positive impacts on and reduced risks
Answers:
1. a) charged nucleus with negatively charged electrons
2. d) Nucleus
3. c) Protons
4. c) A group of atoms that are chemically bonded
5. b) CO2
6. b) Atoms are smaller than everyday objects.
7. c) An atom is particle, while a molecule is a of particles.
8. b) By collecting additional data and probing new phenomena
9. c) Creation of weapons like atomic bombs