Science Test 1

Which of the following combination will be easiest to separate with a magnet?

• salt and sand

• sand and iron nails

• aluminum cans and sand

• salt and Aluminum cans

Students in a science class mixed five substances in water. Which of the substances maintained their physical properties when they were mixed with the water? 

Select THREE correct answers. 

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Jillian filled four 150 mL beakers with water. She added a different material to each beaker and stirred it 10 times. From her list below, which substances will NOT dissolve in the beaker? 

Select TWO correct answers.

• sugar

• cooking oil

• iron filling

• salt

• drink powder mix

Sarah and Amir are making lemonade to sell at a neighborhood lemonade stand. They added lemonade drink mix powder to 1 gallon of water. Which physical properties of the water are changed as the powder is mixed with the water? 

Select THREE correct answers. 

• state of matter

• color

• conductivity

• volume

• mass

A student made a mixture of sand and sugar where the individual crystals of each are approximately the same size. What is the easiest way to separate the sugar and sand mixture? 

• Use a filter that has holes large enough to allow the sugar through but small enough to trap the sand 

• Use a pair of tweezers to separate the individual crystals into two piles 

• Put the mixture in water and filter the sand out of the water 

• Use a magnet to pull the sugar crystals out of the mixture 

Tonya takes a glass filled with water and ice cubes outside on a warm summer day and places it on top of a table. Once it is taken outside, the water in the air will — 

• freeze the liquid water, but the ice cubes will remain solid. 

• cause all the liquid water to evaporate. 

• turn the ice cubes into a gas but the water will remain a liquid. 

• condense on the outside of the glass. 

Niuja and her friend Emma were eating popsicles outside on a hot sunny day. Which of the following statements represent what could happen to the popsicles if they aren't eaten quickly? 

Select TWO correct answers. 

• The popsicles could melt, changing from a liquid to a solid. 

• The popsicles could remain frozen as a solid. 

• The popsicles could melt, changing from a solid to a liquid. 

• The popsicles could remain frozen as a liquid. 

• The melted popsicles could evaporate, changing from a liquid to a gas. 

Based on the student's observations, which of these tables properly identifies the objects?

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Classify the state of matter of the juice at 1:00 pm.

• solid

• liquic

• gas

• Don't know

Classify the state of matter of the juice at 2:00 pm.

• Don't know

• solid

• liquid

• gas