- 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 odor, determine temperature, observe color, determine boiling point
B) Determine mass, observe volume, determine temperature, observe odor
C) Observe volume, determine mass, observe color, determine pH
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) T
B) S
C) Q
D) R
- 3. Which of the following statements does not accurately describe one of the three classical states of matter?
A) Solids have a definite volume.
B) Gases take the shape of their container.
C) Liquids fill the volume of their container.
D) Solids are not as easily compressed as gases.
- 4. Compared to 250 g of gaseous nitrogen, 250 g of liquid nitrogen has greater -
A) temperature
B) volume
C) mass
D) density
- 5. Which of the following lists records the states of matter in order from most compressible to least compressible?
A) solid, liquid, gas
B) gas, liquid, solid
C) liquid, solid, gas
D) gas, solid, liquid
- 6. The experiment illustrates that iron and sulfur combine to form —
A) a mixture
B) a compound
C) a nonmetal
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 solution
D) a mixture
- 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) an alloy
B) a mixture
C) an element
D) a compound
- 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) an element
B) a compound
C) a polymer
D) a mixture
- 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) compound
B) alloy
C) polymer
D) aqueous solution
- 11. The substance commonly referred to as water (H2O) is an example of -
A) a mixture
B) an element
C) a solution
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) potassium
B) vanadium
C) calcium
D) argon
|