- 1. A student is working with four beakers that each contain a clear liquid. Which set of procedures would be best to use to determine whether one of the beakers contains only distilled water?
A) Observe volume, determine mass, observe color, determine pH
B) Observe odor, determine temperature, observe color, determine boiling point
C) Determine mass, observe volume, determine temperature, observe odor
D) Observe odor, detemine pH, detemine density, determine boiling point
- 2. The picture above shows samples of aluminum in different sizes and shapes. Which sample demonstrates that aluminum is a ductile metal?
A) Q
B) S
C) R
D) T
- 3. Which of the following statements does not accurately describe one of the three classical states of matter?
A) Solids are not as easily compressed as gases.
B) Liquids fill the volume of their container.
C) Solids have a definite volume.
D) Gases take the shape of their container.
- 4. Compared to 250 g of gaseous nitrogen, 250 g of liquid nitrogen has greater -
A) density
B) volume
C) mass
D) temperature
- 5. Which of the following lists records the states of matter in order from most compressible to least compressible?
A) solid, liquid, gas
B) liquid, solid, gas
C) gas, solid, liquid
D) gas, liquid, solid
- 6. The experiment illustrates that iron and sulfur combine to form —
A) a nonmetal
B) a compound
C) a mixture
D) an alloy
- 7. A liquid sample is brought into the lab for testing. It is determined that the sample is a combination of simpler substances which have been joined together in a definite ratio, and that it can be chemically broken apart into these simpler substances. The sample is –
A) a compound
B) an element
C) a mixture
D) a solution
- 8. Air is a combination of different gases which do not exist in exact ratios and can be separated based on their physical properties. Based on this information, it can be inferred that air is a -
A) a compound
B) an alloy
C) a mixture
D) an element
- 9. A powdery sample is brought into the lab. The technician notices that the sample has a strong odor and determines that it cannot be separated into simpler substances. The sample should be identified as –
A) a polymer
B) a mixture
C) a compound
D) an element
- 10. A metal sample with a high, broad melting point is examined in a lab. The lab determines that the sample can be separated into a simpler substances by melting it and allowing it to separate based on the desnity of its constituents. The sample is a/an –
A) polymer
B) compound
C) alloy
D) aqueous solution
- 11. The substance commonly referred to as water (H2O) is an example of -
A) an element
B) a solution
C) a mixture
D) a compound
- 12. A certain atom has a nucleus containing 20 protons and 20 neutrons and has 18 electrons orbiting the nucleus. This ion is a form of the element —
A) argon
B) calcium
C) potassium
D) vanadium
- 13. A clear, pure liquid sample is brought into the lab and exposed to an electrical current. Different gases are produced on each of the electrodes. The sample is –
A) a polymer
B) a compound
C) an element
D) an alloy
- 14. In which diagram is a chemical change occurring?
A) Diagram 3
B) Diagram 2
C) Diagram 1
D) Diagram 4
- 15. Sheets of ice containing mostly pure water can be formed by decreasing the temperature of saltwater. Which of these best describes this change?
A) Nuclear change
B) Chemical change
C) Physical change
D) Atomic change
- 16. Which of these is an example of a chemical change?
A) Corn being ground
B) Sugar dissolving in tea
C) An iron nail rusting
D) A pot of water boiling
- 17. Which of these represents a physical change?
A) Wood burning
B) Iron rusting
C) Food spoiling
D) Ice melting
- 18. Which of the following situations contains an example of a chemical change?
A) Watercolor paint drying on paper
B) Ice forming after water is placed in a freezer
C) A sugar cube dissolving in a glass of water
D) A bicycle rusting after it is left in the rain
- 19. Which of the following is an example of a chemical change?
A) Milk souring
B) Sugar dissolving
C) Ice cracking
D) Lead melting
- 20. Which of the following processes is an example of a physical change associated with an oak tree?
A) Evaporation of water from the surfaces of leaves
B) Water and carbon dioxide being converted to glucose
C) Decomposition of bark by bracket fungi
D) Starches and sugars being broken down during energy production
- 21. A sugar cube in a test tube is heated over a Bunsen burner. The sugar cube turns black and has less mass than before it was heated. These changes occur because the sugar has —
A) become hydrated
B) boiled
C) reacted chemically
D) melted
- 22. I. Density II. Color III. Volume IV. Boiling Point V. Mass Which of the following properties listed above are considered extensive physical properties?
A) I, II, and IV
B) I and II
C) III, IV, and V
D) III and V
- 23. According to the activity series, which of the following metals would be considered the most reactive?
A) sodium
B) gold
C) lithium
D) potassium
- 24. Magnets can be used to easily remove certain metals from heterogeneous mixtures. These metals are called ferromagnetic metals. Which of the following metals is considered to be ferromagnetic?
A) lead
B) aluminum
C) cobalt
D) sodium
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