I. Select the correct option:
1. During physical and chemical changes:
(b) energy is always released
(a) energy is always absorbed
(C) no energy is absorbed or released
2. When a change occurs:
(a) energy changes do not occur
(b) energy is always given out
(C) energy is always absorbed
3. Which of the following factors help water to evaporate faster?
(a) Low temperature
(b) Humid weather
(C) Large surface area
(d) High atmospheric pressure
4. During which of the following changes are new substances formed?
(a) Melting
(b) Sublimation (c) Dissolution
5. In which of the following processes is
(d) Burning
(d) Rusting
Fill in the blanks with the correct words from the brackets.
(d) energy is either absorbed or released
(d) energy is either absorbed or given ou
Answers
Answered by
6
Answer:
1. a
2.
3.C
4.
5.
Explanation:
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Answered by
2
Answer:
c
Explanation:
energy is destroy or created no more Chang's are there that it
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