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Quiz

ESCI 1001 Quiz: Lecture quiz 2

4 Pages
91 Views
Spring 2018

Department
Earth Sciences
Course Code
ESCI 1001
Professor
Edwards
Study Guide
Quiz

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REVIEW SHEET for SECOND QUIZ (Wednesday, Feb. 14, 100 Rapson): ESCI 1001/1101
(Larry Edwards)
Atoms and bonds
1. Name three sub-atomic particles.
a. Protons (양자), electrons (전자), and neutrons (중성자)
2. Where are they located in an atom?
a. The nucleus
3. What electrical charge does each have?
a. Proton; positive electric charge
b. Neutron; neutral electric charge
c. Electron; negative electric charge
4. What characterizes atoms of the same element?
a. They have the same number of protons
5. What is atomic number? mass number? charge? ion? cation? anion? an isotope?
a. Atomic number: the number of protons in the nucleus of an element
b. Mass number: the sum of the masses of an elements protons and neutrons
c. Cation: a positively charged iron
d. Anion: a negatively charged ion
e. Isotope: atoms of the same element with different numbers of neutrons
6. What is a chemical bond?
a. The electrostatic attraction between negative and positive charges that hold
together ions or atoms
7. What are the 4 types of chemical bonds and what is the basis for each of these
bonds? Which of these 4 is the strongest? The weakest?
a. 4 types of chemical bonds
i. Ionic bonds: simplest chemical bond that forms by electrostatic attraction
between ions of opposite charge 2
ii. covalent bonds: when atoms share electrons. Results in a molecule
(strongest)
iii. metallic bond: Reaction between molecules within metals called alkali
reactive force. It is the sharing of a sea of delocalized electrons a lattice of
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Description
REVIEW SHEET for SECOND QUIZ (Wednesday, Feb. 14, 100 Rapson): ESCI 1001/1101 (Larry Edwards) Atoms and bonds 1. Name three sub-atomic particles. a. Protons (), electrons(), and neutrons () 2. Where are they located in an atom? a. The nucleus 3. What electrical charge does each have? a. Proton; positive electric charge b. Neutron; neutral electric charge c. Electron; negative electric charge 4. What characterizes atoms of the same element? a. They have the same number of protons 5. What is atomic number? mass number? charge? ion? cation? anion? an isotope? a. Atomic number: the number of protons in the nucleus of an element b. Mass number: the sum of the masses of an elements protons and neutrons c. Cation: a positively charged iron d. Anion: a negatively charged ion e. Isotope: atoms of the same element with different numbers of neutrons 6. What is a chemical bond? a. The electrostatic attraction between negative and positive charges that hold together ions or atoms 7. What are the 4 types of chemical bonds and what is the basis for each of these bonds? Which of these 4 is the strongest? The weakest? a. 4 types of chemical bonds i. Ionic bonds: simplest chemical bond that forms by electrostatic attraction between ions of opposite charge 2 ii. covalent bonds: when atoms share electrons. Results in a molecule (strongest) iii. metallic bond: Reaction between molecules within metals called alkali reactive force. It is the sharing of a sea of delocalized electrons a lattice of
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