untitled

1.Which of the following processes causes the distance between the particles to increase the most?

• Melting

• Freezing

• Sublimation

• condensation

2.Which statements describe the arrangement of particles in solids?

• particles are moving in all directions

• Particles are arranged in neat rows

• particles can move past each other

• particles vibrate about their positions

3.Bleach spilled on the kitchen floor and after sometime whole kitchen smelled of bleach. Which process occurred?

• Evaporation and brownian motion

• Diffusion

• Evaporation

• Evaporation and diffusion

1. Oxygen diffuses .......... than fluorine as its .............. is less than that of the fluorine

1. Which apparatus is used to measure 23.4ml ?

• measuring cylinder

• pipette

• glass syringe

• Burette

6.Which equipment is used to find out if dissolving salt in the water is an endothermic process?

• top pan balance and thermometer

• thermometer

• pipette and thermometer

• stop clock and thermometer

8.Which piece of apparatus cannot be used to collect and measure the volume of gas?

• measuring cylinder

• gas syringe

• burette

• pipette

How is pressure created in can of gas?

• collision of gas particles

• movement of gas particles

• collision of particles against the wall of container

• weak forces of attraction