formative assessment

who noticed that tiny particles  suspended within the fluid of pollen grains were moving in a random fashion.

• Ernest Rutherford

• Robert Brown

• Isaac Newton

• Michael Faraday

Water molecules hit pollen. This causes ______ of pollen particles.

• Brownian motion

• Diffusion

• Molecular kinetic energy

What is the spread of molecules of one liquid in molecules of another liquid?

• Brownian motion

• Diffusion

• Molecular - kinetic energy

_____ is the movement of particles move from an area of high concentration to an area of low concentration until equilibrium is reached.

• movement of molecules

• brownian experiment

• diffusion

1. The diffusion happens from ____ concentration to ____concentration.

• from higher to lower

• from lower to higher

When diffusion stops?

• when concentration is higher

• when the speed of diffusion will become higher

• when concentration is same everywhere

• when the speed of diffusion will become lower

If you increase the temperature, the speed of diffusion will become _____. 

• higher

• lower

• same everywhere

What is the building block of matter?

• electrons

• molecules

• atom

What means a word Kinetic?

• constant motion

• increasing motion

• motion with deceleration

Which of them is not example for diffusion?

• You can smell perfume because it spread into the air and makes its way into your nose.

• In leaves, oxygen from the leaf cells spread out to the air.

• A tea bag placed in a cup of hot water will spread into the water.

• The lamp spread the light in the room