Chapter 1 Chemistry: The Central Science
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
physical: (iii), chemical: (i), (ii) is neither
1.5
12 blue cubes, infinite number of significant figures; 2 × 101 red spheres, one significant figure
1.6
2.4 × 102 lbs.
1.7
2.67 g/cm3
1.8
(a) 4 red blocks/1 object (b) 1 object/1 yellow block (c) 2 white blocks/1 yellow block (d) 1 yellow block/6 grey connectors
1.9
375 red bars; 3500 yellow balls
Applying What You’ve Learned a)
220.0 K.
b)
0.25°F/decade, 0.36°F/decade.
c)
1.22 g/L, 1.22 × 10−3 g/cm3, 1.22 kg/m3.
d)
2.7 × 1019 molecules/cm3. Copyright © McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education.