26. The density of an object is 1.5 g/cm³. If the volume of the object is 12 cm³, what is its mass?
a) 1.2 g
b) 1.5 g
c) 12 g
d) 18 g
Answer: d) 18 g
27. The density of a substance is typically measured at:
a) Room temperature
b) Boiling temperature
c) Freezing temperature
d) Any temperature
Answer: a) Room temperature
28. Which of the following objects would have the highest density?
a) Ice
b) Liquid water
c) Steam (water vapor)
d) They would all have the same density
Answer: a) Ice
29. The density of an object is 0.8 g/cm³. If the mass of the object is 4 grams, what is its volume?
a) 2 cm³
b) 4 cm³
c) 5 cm³
d) 8 cm³
Answer: d) 8 cm³
30. Which of the following substances would be considered the most dense?
a) Air
b) Helium gas
c) Hydrogen gas
d) Oxygen gas
Answer: d) Oxygen gas
