What do you call a matter that has two kind of particle and component?

• Elements

• Mixtures

• Pure Substances

In separation of husk and rice, husk is no longer needed. What do you call to a component which is no longer be needed?

• impurity

• purity

• sieve

Which of the following method is best describe in the picture above?

• handpicking

• sieving

• winnowing

What do you call a method that is used when the components of a mixture are of different SIZES?

• winnowing

• sieving

• threshing

What do you call in a method of removing grains from plants?

• sieving

• threshing

• winnowing

Which of the following traditional method can be used to separate grain and husk?

• handpicking

• sieving

• winnowing

Which traditional method is best describe in the picture above.

• handpicking

• sieving

• winnowing

Why do we need to separate components of mixtures?

• to find the impurities and make use of them

• to find ways in making new substances

• to find which components are really needed or useful

In mixture of camphor and iron filings, which component will retain after heating the mixture?

• camphor

• camphor and iron filings

• iron filings

Why does camphor is left behind in a mixture of camphor and iron filing after bringing up the magnet around it?

• because camphor is not made up of iron or metal

• because iron filings are compressed while camphor is not

• because the color of camphor is not black