5.
4.
3.
2. p. 355
1.
MAIN POINTS: Write a sentence summary of the main point of each paragraph on the below pages.
4.
3.
Page 354
1 and 2.
Chemical Formula:
Label the parts of the below chemical formula:
H
2
O
Questions: Questions you should be able to answer after reading.
1) Define Molecule (Look in glossary):
2) Molecules are held together by a) Covalent bonds. b) Ionic bonds. c) Both a and b.
3) How may atoms of Chlorine are in the carbon tetrachloride molecule:
CCl4
4) Which of the compounds has a chemical formula
C
3
H
8
?
Vocab:
Chemical Bond:
Covalent Bond:
1) True or false: Ionic compounds do not form molecules.
2) How are electrons exchanged between
Potassium and Flouride when they form an ionic bond?
3) What will be the charge of a Boron ion?
4) Predict the formula for Beryllium ionically bonded to Fluoride.
Vocab:
Ion:
Ionic Bond:

3)
2) p. 356
1)
Copy Figure 16.3 (no colors needed) and the caption that goes with this figure:
1) Atoms form chemical bonds using?
2) Why do atoms form chemical bonds?
3) 2 hydrogens bond to 1 oxygen to form water.
The water molecule has a lower energy than the
2 hydrogen and 1 oxygen atoms have when they are not bonded together. Where does this energy go when the atoms bond?
4) Name 7 of the most reactive elements (use symbols).
5) Name 5 elements that won’t react at all (use symbols)
Questions: polyatomic ion binary compound covalent bond chemical formula valence electrons ion ionic bond chemical bond
Alkali metals oxidation number
Noble Gases molecule
1.
H
2
O is the _________________ of water.
2.
A(n) _________________________ is formed when atoms share one or more electrons.
3.
A(n) _________________________ is formed when atoms transfer or share electrons.
4.
A(n) _________________________ is formed when atoms transfer electrons.
5.
A charged atom is called a(n) _____________________.
6.
The electrons involved in chemical bonds are called _____________________.
7.
Why do atoms form compounds instead of existing as single atoms? ______________________
_____________________________________________________________________
8.
What do the subscripts 2 and 6 in chemical formula for ethane (C
2
H
6
) mean? ________________
_____________________________________________________________________
9.
Which group of elements don’t usually form chemical bonds with other atoms? _______________
10.
What do we call the particle that is a group of atoms held together by covalent bonds? __________
11.
For each molecule listed below, tell how many of atoms of each element are in that molecule. a) C
6
H
12 b) CaCO c) Al
2
O
6
3
O
3 d) B(OH)
3