SOLUTIONS TO EXERCISES, LESSON 1
1.
chemical,
small(est), element, chemical, chemical, element (para 1-3c(1))
2.
elements (para 1-3c(2))
3.
cannot, physical, chemical (para 1-3c(1))
4.
purified, chemical (para 1-3c(2))
5.
space, weight (para 1-3)
6.
7.
solid, liquid, gas
solid, definite
indefinite; definite
indefinite, (para 1-3a)
8.
smell, color; shape; freezing point; boiling point; solubility (para 1-3b)
9.
energy
chemical reaction
10.
proton; one; +1
neutron; one; 0
electron; zero; -1 (para 1-5b,c)
11.
protons, (para 1-5b(3)(a))
electrons (para 1-5c(3))
12.
protons, neutrons
12 (para 1-5b(3)(b))
13.
Number, locations (para 1-5c(1))
14.
15.
2, 8, 18, 32 (para 1-5c(2))
MD0803
1-42