Science Skills
What type of graph is represented on the board?
A. bar graph
B. line graph
C. circle graph
D. none of the above
B. line graph
A mixture that appears to contain only one substance is a(an)?
A. homogeneous mixture.
B. heterogeneous mixture.
C. element.
D. compound
•A. homogeneous mixture.
You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” The soy milk is most likely a
A. solution.
B. pure substance.
C. colloid.
D. suspension.
•D. suspension.
Which of the following is NOT a clue that a chemical change has occurred?
A. change in color
B. change in shape
C. formation of a precipitate
D. production of a gas
•B. change in shape
A gas has
A. a definite volume but no definite shape.
B. a definite shape but no definite volume.
C. no definite shape or definite volume.
D. a definite volume and definite shape.
•C. no definite shape or definite volume.
In which step of the scientific method is information obtained through the senses?
A. Drawing Conclusions
B. Making Observations
C. Analyzing Data
D. Revising a Hypothesis
B. Making Observations
Which of the following is a heterogeneous mixture?
A. sugar water.
B. a jar of mixed nuts.
C. stainless steel.
D. water in a swimming pool.
•B. a jar of mixed nuts.
Which of the following has the highest viscosity?
A. corn syrup
B. milk
C. water
D. orange juice
•A. corn syrup
Which of the following is a physical change?
A. sawing a piece of wood in half
B. burning a piece of wood
C. rust forming on an iron fence
D. a copper roof changing color from red to green
•A. sawing a piece of wood in half
Matter that has a definite volume but no definite shape is a
A. liquid.
B. solid.
C. gas.
D. plasma.
•A. liquid.
What is the most important safety rule?
A. Never work with chemicals
B. Always use unbreakable glassware.
C. Always follow your teacher's instructions and textbook directions exactly.
D. Never do experiments that involve flames or hot objects.
C. Always follow your teacher's instructions and textbook directions exactly.
Which of the following is malleable?
A. ice
B. glass
C. gold
D. pottery
•C. gold
Flammability is a material’s ability to burn in the presence of
A. hydrogen
B. oxygen
C. nitrogen
D. carbon dioxide
•B. oxygen
Which of the following is a clue of a chemical change?
A. iron changes color when heated.
B. a gas forms when vinegar and baking soda are mixed.
C. gas bubbles form in boiling water.
D. balls of wax form when melted wax is poured in to ice water.
•B. a gas forms when vinegar and baking soda are mixed.
What is the result of a force distributed over an area?
A. temperature
B. volume
C. pressure
D. mass
•C. pressure
Which of the following is an example of a safe laboratory procedure?
•A. tying back long hair and loose clothing
•B. eating or drinking from laboratory glassware.
•C. touching hot objects with your bare hands.
•D. testing an odor by directly inhaling the vapor.
•A. tying back long hair and loose clothing
A material that is malleable and conducts electricity is most likely?
A. motor oil.
B. ice.
C. a metal.
D. wood.
•C. a metal.
During which of the following chemical changes does a precipitate form?
A. vinegar is added to baking powder
B. lemon juice is added to water
C. lemon juice is added to milk
D. a banana ripens
•C. lemon juice is added to milk
How is 0.00069 written in scientific notation?
A. 69 X 10 -5
B. 6.9 X 10 -4
C. 6.9 X10 -3
D. 6.9 X10 4
•B. 6.9 X 10 -4
Which of the following factors affects the pressure of an enclosed gas?
A. temperature
B. volume
C. number of particles
D. all of the above
•D. all of the above
How do scientists who speak different languages make their data understandable to one another?
•A. They all use different systems of measurement.
•B. They all use SI
•C. They communicate through a universal translator.
•D. They all must speak French.
•B. They all use SI
Filtration can be used to separate mixtures based on
A. their melting points.
B. their densities.
C. their boiling points.
D. the size of their particles.
•D. the size of their particles.
When a physical change in a sample occurs, which of the following does NOT change?
A. shape
B. temperature
C. volume
D. composition
•D. composition
What is the symbol for aluminum?
•A. AL
•B. Al
•C. Au
•D. A
•B. Al
During which phase change does the arrangement of water molecules become more orderly?
A. melting
B. freezing
C. boiling
D. condensing
•B. freezing