Everything Science Grade 10

(Marvins-Underground-K-12) #1

CHAPTER 25. EXERCISE SOLUTIONS 25.11


22. 34 , 4 m
23.
1 812, 5 mm
24. 172 m

25. (a)
sound
waves
(b)
transverse

waves
(c)
wavelength
(d)
frequency

(e)
amplitude
(f)wave
speed
(g) wave

speed
(h)
period

EM radiation ESAIS


End of chapter exercises ESAIT


1. 2. 0 × 10 −^25 J

2. 3 × 10 −^19 J

3. 8 , 6 × 10 −^21 J

4. 3 , 0 × 103 m

5. For the photon with wavelength 532 nm:
E= 3, 7 × 10 −^19 J
For the photon with frequency 13 Hz: E=
8 , 6 × 10 −^24 J
The energy of the second photon is: 2 , 3 ×
10 − 2 m.

6. Radio, microwave, infrared, visible, ultra-
violet, X-ray, gamma ray

The particles that


substances are made of


ESAIU


End of chapter exercises ESAIV


1. (a)molecule
(b)empirical formula

(3) (a)covalent
(b)NH 3

(c)

(d)
(4) (a)covalent molecular

(b)metallic network
(c) covalent network
(d)covalent molecular
(e) ionic network
(5) (a)carbon dioxide
(b)CO 2
(c) covalent

Chemistry: Chemical systems 489
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