chemistry december 17, 2014 chemical bonds. science starter pick up from back table 3 minutes you...
Post on 11-Jan-2016
216 Views
Preview:
TRANSCRIPT
CHEMISTRYDecember 17, 2014
CHEMICAL BONDS
SCIENCE STARTER
•PICK UP FROM BACK TABLE•3 MINUTES• YOU ARE SILENT AND
SEATED
IMPORTANT DATES
• TODAY – Final day for any outstanding homework
• THURSDAY – Lab• FRIDAY – Quiz
AIM
• What type of bond exists between NaCl?
VOCABULARIES
• COVALENT BOND• IONIC BOND• DIATOMIC ATOMS• METALLIC BOND
COVALENT BOND
• bond in which one or more pairs of electrons are shared by two atoms
IONIC BOND
• bond in which one or more pairs of electrons are removed and attached to another atom, resulting in cations and anions which attract each other.
BONDING RULES
• COVALENT BOND–BONDING BETWEEN TWO NONMETALS
• IONIC BOND–BONDING BETWEEN A METAL AND A
NONMETAL
DIATOMIC ATOMS
• atoms comprising of 2 atoms comprising of the same element.
7 DIATOMIC ATOMSHAVE NO FEAR OF ICY COLD BEAR
• HYDROGEN• NITROGEN• FLUORINE• OXYGEN• IODINE• CHLORINE• BROMINE
METALLIC BOND
• bond in which the metals atoms move freely in all directions, given rise to “positive ions in a sea of electrons”
IONIC BONDSCompound Lewis Dot StructureKBr
CaCl2
LiF
MgI2
COVALENT BONDSCompounds Lewis Dot Structure
NH3
N2H4
N2H2
F2
QUESTION 1
• What is the difference between an ionic bond and a covalent bond?
ANSWER 1
The main difference between a covalent bond and an ionic bond is that in an ionic bond, one or more electrons are removed and attached to another atom while in a covalent bond, one or more pairs of electrons are shared by two atoms
QUESTION 2
• What charge will a Group 2 cation have?
ANSWER 2
• +2
QUESTION 3
• What charge will a Group 16 anion have?
ANSWER 3
• -2
QUESTION 4
• What charge will a Group 15 anion have?
ANSWER 4
• -3
QUESTION 5
• What is the total number of valence electrons for KBr?
ANSWER 5
• 8
QUESTION 6
• What is the total number of valence electrons for F2
ANSWER 6
• 14
QUESTION 7
• Predict whether ionic or covalent if the following elements bond with oxide.
• Sodium• Magnesium• Aluminum• Silicon• Phosphorus• Sulfur
ANSWER 7
• Sodium• Magnesium• Aluminum• Silicon• Phosphorus• Sulfur
AIM PROMPT
• WRITE YOUR RESPONSE TO THE AIM PROMPT• What type of bond exists between NaCl?
State your claim and provide evidence
top related