Mixing

What are pure substances made up of?

• Different types of atoms

• Only one type of molecules

• Only one type of atoms or molecules

• Different types of molecules

What is an example of a compound as a pure substance?

• Oxygen atoms

• Hydrogen atoms

• Carbon dioxide

• Iron

What is the term used for adding unwanted components to food items?

• Mixing

• Separating

• Adulteration

• Purifying

What is the process of separating grains from the harvested stalk called?

• Handpicking

• Sedimentation

• Threshing

• Winnowing

Which method is used to separate sand from powdered dry leaves?

• Handpicking

• Threshing

• Winnowing

• Sieving

What is the process of separating insoluble materials from liquid called?

• Sedimentation and Decantation

• Evaporation

• Condensation

• Filtration

How is the process of separating soluble materials from the solution by heating it called?

• Sedimentation

• Filtration

• Condensation

• Evaporation

What is an example of the process of converting water vapours into water by cooling?

• Evaporation

• Condensation

• Filtration

• Sedimentation

What is the purpose of separating components from mixtures to remove impurities or harmful components?

• To obtain pure metals from their natural forms

• To obtain useful components

• To remove impurities or harmful components

• To obtain pure components

What is the method of separating one substance from a mixture of two or more substances called?

• Mixing

• Purification

• Adulteration

• Separation