1
2
3
4
100
Which object conducts electricity?
a. glass marble
b. aluminum can
c. rubber eraser
d. wool sock
b. aluminum can
100
A student combined powdered paint with water to make a small amount of a blue liquid paint mixture. The student left the paint mixture in an open container. Several days later the student found the container and observed that changes had occurred. What most likely happened to the mixture?
a. the container was empty after the mixture evaporated into the air
b. the paint evaporated, leaving only clear water in the container
c. the water evaporated, leaving only a dry blue solid in the container
d. the liquid paint mixture was lighter in color after some water evaporated
c. the water evaporated, leaving only a dry blue solid in the container
100
Which set of procedures would be best to follow when separating a mixture of sand, salt, and water?
a. Evaporate the liquid to separate the water, heat the solid mixture to separate the salt
b. Pour the mixture through a filter to separate the sand, evaporate the liquid to separate the salt
c. Pour mixture into a bowl to separate the water, use a hand lens to separate the sand and salt
d. Heat the mixture on a hot plate to separate the sand, cool the liquid to separate the sale
b. Pour the mixture through a filter to separate the sand, evaporate the liquid to separate the salt
100
Which of the following can be concluded based on the results?
a. sphere 1 is more dense than sphere 3
b. sphere 2 is less dense than sphere 3
c. sphere 3 is less dense than sphere 2
d. sphere 2 is less dense than sphere 1
c. sphere 3 is less dense than sphere 2
200
Based on the data, which material was the best conductor of heat?
Material 2
200
A science class performed an investigation by evaporating a solution containing 10g of salt and 50 ml of water. How much salt would you expect to find in the cup at the end of the investigation?
a. 60g
b. 50g
c. 10g
d. 5g
c. 10g
200
A student took a frozen water bottle to the playground on a warm and sunny day. She set the bottle on the table and went to play. What changes will most likely occur?
a. the water in the bottle will freeze
b. the ice will begin to melt
c. the heat will cause the plastic to melt
d. all of the water will evaporate
b. the ice will begin to melt
200
What tool would best help you sort iron bolts from aluminum bolts?
a. magnet
b. filter
c. hot plate
d. ruler
a. magnet
300
Water and oil are poured into the same container. An object is added. The materials are allowed to sit and their final positions are shown in the illustration. What is the most reasonable conclusion that can be made from this test?
A The object has the lowest density.
B Water is more dense than oil.
C The object is more dense than water.
D Oil has the highest density.
B Water is more dense than oil.
300
A tablespoon of a substance is added to warm water and stirred. The result was that the substance could no longer be seen. We can conclude from the results that the substance-
a. is less dense than water
b. heated the water
c. flavored the water
d. dissolved in water
d. dissolved in water
300
The table shows how the temperature changed over six minutes of water samples kept in four different containers. Which container was made of the best heat insulator?
container 2
300
A student put a plastic ball, glass marble, metal paper clip, and wood block in a bucket filled with water. Which two objects are most likely less dense than the water?
a. wood block and metal paper clip
b. plastic ball and glass marble
c. metal paper clip and glass marble
d. wood block and plastic ball
d. wood block and plastic ball
400
Which of these is not soluble in water?
a. oil
b. water
c. honey
d. sugar
a. oil
400
When white marbles are mixed with black marbles the mixture will-
a. be all the same color
b. contain black and white marbles
c. change its state of matter
d. have less volume
b. contain black and white marbles
400
A student was investigating a sample of matter that is attracted to a magnet and is a good conductor of electricity. Based on this evidence, the matter is made of -
A iron
B wood
C glass
D paper
A iron
400
What property of water changes after creating a solution of lemon juice and water?
a. shape
b. temperature
c. state
d. taste
d. taste
500
Wires carrying electricity are usually covered in plastic to keep them from starting a fire. Why does plastic keep electricity from starting a fire?
a. plastic is a good insulator
b. plastic can melt when heated
c. plastic is softer than wire
d. plastic conducts electricity
a. plastic is a good insulator
500
Which substances, when mixed together, maintain their original physical properties?
a. water and sand
b. wood chips, gravel, and water
c. glass beads and water
d. all of the above
d. all of the above
500
A student conducts an investigation using caramel candy, paper plates, and a stopwatch. The student places a piece of candy on each plate then puts the plates in different locations. The student will record the time it takes for the candy to change state and other observations. Which question is the student most likely trying to answer?
a. In which location does the caramel candy change state the fastest?
b. What causes the caramel candy to keep its shape?
c. Why does the caramel candy change state?
d. At what temperature does the caramel candy melt?
a. In which location does the caramel candy change state the fastest?
500
Which two samples could be glass and saltwater?
a. 1 and 2
b. 3 and 4
c. 1 and 3
d. 2 and 3
c. 1 and 3