Classroom Chemistry

Which of these is NOT one of the properties used to describe an object.

• Size
• Shape
• Colour
• Lustre

 Solid, liquid, and gas describe WHAT property we use to describe an object?

• Hardness 
• State  
• Colour 
• Shape

When you are trying to separate a solid and another solid, what technique would you NOT use? 

• Sieves 
• Magnets 
• Decanting  
• Water

What would be the best technique to separate a mixture of beans and rice?

• Sieves (various sizes) 
•  Distilling 
• Magnet 
• Evaporation

Any solid that CAN dissolve in water is...

• Supersaturated 
• Insoluble 
• Soluble
•   Suspension

 INSOLUBLE is...

• A solid that CANNOT dissolve in water.  
• A solid that PARTIALLY dissolves in water.
•  Rice and water 
• Sieve

When 2 liquids do not mix, the top liquid is not as ___________________ as the bottom liquid.

• Slippery 
• Dense 
•  Warm 
• Light

Decanting

• Removal of one liquid from another using a sieve. 
• Cooling it down until it liquefies. 
• Coffee filter
• Removal of 1 liquid from another using an eye dropper. 

Describe a method to separate the following: A goop mixture of corn starch and water

• Use sieves 
• Evaporation 
• Cool water (dilute) & filter  
• Magnets