Matter and energy 6th gade FR

What are the different states of matter?

• Gas, air and liquid

• Gas and air

• Gas, solid and liquid

• Cork, wood and iron

______ is a chemichal change that produces organic substances. It does not oxygen and we use microorganism for this process.

• Fermentation

• oxidation

• Both are correct

• None are correct

Write the correct word.

_____ is the chemical reaction that occurs when some substances react with oxygen and transform into other substances

What are the different types of mixtures?

• Homogeneous

• Mixture

• Homogeneous and heterogeneous

• None of the previous answers are correct

What are the different separation technics of mixtures

• Homogeneous and heterogeneous

• Mass, volume and density

• Decantation, filtration, distillation, evaporation and magnetic sepation

Write yes or no.

Are Thermal energy and heat the same type of energy?

Write yes or no.

Refraction occurs when the light passes from one transparent object to another

When ligth passes through a lens...

• the angle of the light hits the mirror.

• the colours that form white light all have different angles of refraction.

• refraction changes the image of the objects we are looking at.

Light travels in straight lines from the light source to the object it illuminates.

• True

• False

When, in a glass of water with an egg we add some salt...

• we change the density , incrisingly, so the egg floats in the middle of the water

• nothing happend

• we will have a salty egg