ANSWERS TO WORKBOOK PAGES 17-22
2.1
1.
+ 6
n 6
2.
+6
n7
+6
n8
3. number of neutrons differs by 2, C-12 is heavier than C-14, C-14 is radioactive
4. Number of protons is the same, number of electrons is the same, reactivity is the same
5. Atom
6. Isotopes
7. Electrons
8. 2 or more atoms chemically combined=bonded
9. A specific ration of atoms, the elements that combined chemically
10. Cl - +17, e 18
Ca 2+ + 20, e 18 Cl- + 17 e 18
11. Ionic-electrons are lost or gained
covalent- electrons are shared
12. Chemical bonds store energy which are released during the chemical processes of
metabolism.
2.2
1. T
2. T
3. T
4. T
5.
mixture
physical combination of two or more substances
cinnamon sugar
Solute
substance being dissolve
salt in water
Solvent
substance doing the dissolving
water
Suspension
mixture of water and nondissolved substance
sand in water
Solution
homogeneous mixture
salt water
6. there is an equal number of H ions as OH ion.
7. the concentration of H ions in solution
8. increasing acidic would go towards the left; increasing basic would go to the right
9. lemon juice, stomach acid
11. add a weak acid to the solution.
12. they help maintain the pH of the system
2.3
1. 4
2. the presence of 4 valence electrons allows carbon to bond in several different ways (single,
double, triple bonds) as well as with many different atoms at the same time.
3. macromolecules
4. Dehydration synthesis reactions
5. monomers
6. carbohydrates
C,H,O (ratio; 2 H to 1 O )
energy
Lipids
C<H<O (no ratio)
energy
Proteins
C,H,O,N,S
cellular growth/repair
Nucleic acids
C,H,O,N
inheritance,DNA,RNA
7. Organic compounds got their name from the fact that they are all found in living organisms
and possess covalent bonds
ANSWERS TO TEXTBOOK QUESTIONS
Chapter 3 chapter review page 60-61
Multiple choice
1.
2.
3.
4.
5.
6.
7.
8.
A
B
D
C
A
B
D
D
True false
1.
2.
3.
4.
5.
6.
7.
8.
T
F
F
F
F
F
T
F
COVALENT
REACTION
ATOMIC NUMBER
RELEASE
VOLUME
PROTON
Word Relationships
1.
2.
3.
4.
5.
Terms related to the nucleus of an atom
energy level does not belong
All are elements except carbon dioxide which is a compound
All are states of matter except mass which is a chemical property
Terms associated with the 2nd or 3rd energy level except 2
Terms are associated with covalent bond except electron transfer which deals with ionic
bond
6. Terms deal with physical properties except ability to burn which is a chemical property
7. Terms refer to chemical changes except physical change’
8. Terms associated with the concept of an atom with the exception of divisible particle.
Chapter 4 chapter review page 80
Multiple choice
1.
2.
3.
4.
5.
6.
7.
8.
B
D
A
B
C
C
A
D
True false
1.
2.
3.
4.
5.
6.
7.
8.
F
F
T
F
T
T
F
T
SUSPENSION
ACIDS
MONOSACCHARIDES
POLYUNSATURATED
WORD RELATIONSHIPS
1. All terms deal with mixtures in which one substance, solute, is dissolved in another
substance, solvent with the exception for suspension
2. Terms all deal with complex carbohydrates or polysaccharides except for a
monosaccharide
3. All are lipids with the exception of proteins
4. All are concerned with the way in which enzymes work, except for nucleic acid