Please answer fast:
In ___________ changes only the physical properties of the substances changes.
2. Burning of a candle is a ____________ change.
3. ____________ Changes are usually irreversible.
4. Cooking changes __________ properties of food.
5. Reactions in which heat is absorbed are called _________ reactions.
6. Crystallization is a _____________ change.
7. Salt is obtained from the sea through _____________.
8. In a saturated solution no more of _______ can be dissolved.
B. Choose the correct answer.
1. Which of the following is obtained through crystallization.
a. Metals b. Fibers c. Sugar d. All of these
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Answer:
1. PHYSICAL
2. CHEMICAL
3. CHEMICAL
4. CHEMICAL
5. ENDOTHERMIC
6. PHYSICAL
7. EVAPORATION
8. SOLUTE
B 1. (C) SUGAR