click below
click below
Normal Size Small Size show me how
Chemical Bonds
Molecules- Questions
Question | Answer |
---|---|
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 |