Chapter 1: Chemistry: The Science of Change
Chapter 1 Chemistry: The Science of Change Practice Problems C 1.1
(iii)
1.2
(i) and (i)
1.3
pink liquid = grey solid < blue solid < yellow liquid < blue liquid < green solid
1.4
12 blue cubes, infinite number of significant figures; 1
2 × 10 red spheres, one significant figure 2
1.5
2.5 × 10 lb
1.6
2.67 g/cm
1.7
(a) 4 red blocks/1 object
3
(b) 1 object/1 yellow block (c) 2 white blocks/1 yellow block (d) 1 yellow block/6 grey connectors 1.8
3
375 red bars; 3.5 × 10 yellow balls
Key Skills 1.1
d
1.2
e
1.3
a
1.4
b
Questions and Problems 1.1
Chemistry is the study of matter and the changes that matter undergoes. Matter is anything that has mass and occupies space.
1-1
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