Density

21. Which of the following objects would have the lowest density?

a) Gold

b) Silver

c) Copper

d) Aluminum

22. The density of a substance is defined as its:

a) Weight per unit volume

b) Volume per unit weight

c) Mass per unit volume

d) Volume per unit mass

23. Which of the following materials would be considered the least dense?

a) Cork

b) Styrofoam

c) Plastic

d) Wood

24. The density of an object is 4 g/cm³. If the mass of the object is 20 grams, what is its volume?

a) 4 cm³

b) 5 cm³

c) 10 cm³

d) 80 cm³

25. Which of the following substances would be considered the least dense?

a) Water

b) Oil

c) Alcohol

d) Mercury