50 likes | 242 Views
How can two objects, which are exactly the same size and shape , have a different mass ?. a. Copper atoms might have more mass than aluminum atoms. b. Copper atoms might be smaller so more can fit in the same volume .
E N D
How can two objects, which are exactly the same size and shape, have a different mass? a. Copper atoms might have more mass than aluminum atoms. b. Copper atoms might be smaller so more can fit in the same volume. c. Copper and aluminum atoms might be arranged differently so more copper atoms fit in the same size cube *any one of these explanations alone, or two or three together, could be the reason why the copper cube has more mass*
Copper atoms are slightly smaller than aluminum atoms. Smaller size means that morecopper atoms an fit in the same amount of space. The copper cube contains more atoms than the aluminum cube. 4. One copper atom has more mass than an aluminum atom. more copper atoms + each atom with a greater mass = copper cube weigh more
Define Density The density of an object is the mass of the object compared to its volume. Formula for density: Density = mass ÷ volume or D = m/v Units for density: Units for mass (g) Units for volume (cm3) Units for density = g/cm3
Individual Calculate density of the aluminum and copper Aluminum 2.9 g/cm3 Copper 9.3 g/cm3