G8 T1 2026

1. Pure water boils at o°C at normal atmospheric pressure

• True

• False

6. The temperature decreases by about 1°C for every 1o m we go up

• True

• False

5. The melting point of wax is equal to the melting point of table salt

• True

• False

3. The state of a substance changes from one state to another by gaining heat energy

• True

• False

. Cooking time in pressure cooker is less than cooking in a normal cooking pot

• True

• False

8. Every pure substance has a characteristic boiling point

• True

• False

The amount of depression in the freezing point of solutions depends on their concentrations

)

• True

• False

10. Water freezes in polar regions as a result of gaining thermal energy

• True

• False

1. Dry ice is nitrogen in the solid state

• True

• False

13. An increase in the humidity percentage leads to an increase in the rate of evaporation

• True

• False