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Chemical Bonds

Molecules- Questions

What is the definition of an Atom? SMALLEST unit of Matter that retains unique Chemical Properties.
What are the charges of Protons, Neutrons, and Electrons? Protons: (+); Neutrons: (neutral); Electrons: (-)
What are molecules? 2 or more Atoms BONDED together
Where are Protons and Neutrons located? within the Nucleus of an Atom
What are the types of Chemical Bonds? 1. Covalent; 2. Ionic; 3. Hydrogen
What is a Covalent Bond? a bond SHARING Electrons between Atoms
What are some of the attributes of Covalent Bonds? 1. very STRONG, but not rigid; 2. Polar (UNEQUAL sharing of Electrons); 3. NON-Polar (EQUAL sharing of Electrons)
What are some examples of Covalent Bonds? H2O, CO2, NH3, Glucose
What is the Chemical Composition of Glucose? C6 H12 O6
What are Ionic Bonds? bonds in which there is a TRANSFER of Electrons from 1 Atom to another.
What are some of the characteristics of Ionic Bonds? 1. Weak: DISSOCIATE into Ions in Aaqueous solution;
What is a Cation? a + charged Ion
What is anion? a - charged Ion
What are some examples of molecules with Ionic Bonds? NaCl, KCl, NaOH
What charge do Atoms normally have? neutral
What would happen if an Atom lost Electrons? Atom would have a POSITIVE (+) charge
What would happen if an Atom gained Electrons? Atom would have a NEGATIVE charge
What is a Hydrogen Bond? a bond which uses ELECTROSTATIC Attraction
Where do Hydrogen Bonds occur? usuall between a Hydrogen in one Polar molecule & and an Oxygen in another/ different part of same molecule
What do Hydrogen Bonds determine? the Physical Characteristics or SHAPE of Molecules
What are some examples of Hydrogen Bonds? between H2O, within DNA & Proteins
Created by: Kristel