Science STAAR Review

Which of these is the best conductor of electricity?

• glass rod

• cotton string

• plastic tubing

• copper penny

Which of these is not soluble in water?

• oil

• salt

• honey

• sugar

Which liquid is the least dense?

• oil
• water
• syrup 
• plastic bottle

Which item would be classified as magnetic?

• glass beaker
• iron nail
• rubber ball
• copper penny

The diagram shows one container with oil and water and one container with oil and a cork. What diagram shows what would happen if oil , water, and a cork were all placed in one container.

• 
• 
• 
• 

Boiling water was placed in containers made of four different materials.  Based on the data, which material was the best insulator of heat?

• Material 1
• Material 2
• Material 3
• Material 4

A student places samples of different materials in the space between the wires, indicated by the arrow in the illustration above and observes whether or not the bulb lights up.  What property of the materials can the student determine with this test?

• Whether or not the material is magnetic
• Which materials have a density greater than water
• Whether or no the material conducts electricity
• Which materials have more mass

Which of the following tools could be used to quickly separate a mixture of iron paperclips and sand?

• Magnet
• Hot plate
• Microscope
• Hand lens

Students found four liquids in containers labeled only with the boiling points of the liquids.  Based on this information alone, which liquid could possibly be water?

• Liquid 1
• Liquid 2
• Liquid 3
• Liquid 4

Water with nothing dissolved in it will freeze at what temperature?

• 0⁰C
• 32⁰C
• 100⁰C
• 115⁰C