______1. What substances or chemicals prevent food from decomposition?
a) additive b) preservatives -, ' c) solvent d) soap
______2. It is a substance capable of dissolving another substance.
a) additives b) preservatives c) solvent d) soap
______3. Which of the following is/are the correct safety rules?
a) Never take medicine in the dark. c) Light the stairways.
b) Keep matches out of reach of children. d) All of the above.
______4. Describe the arrangement of molecules in solids.
a) They are far apart from each other. c) They can go freely.
b) They are close together. d) They are arranged one foot apart.
______5. How can energy be transferred from one body to another?
a) by change in temperature c) by other reactions
b) by emitted light and sound d) all of the above