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This set has questions about density, which is a common theme found throughout Earth Science.

0.94 g/cm3 (first multiply the dimensions to get 720 cm3, then divide 680 by 720)

A newly released paperback book has a length of 24 cm, a width of 20 cm, and a height of 1.5 cm. The mass of the book is 680 g. What is the density of the book?

7.9 g/mL (take 44-30 to get 14 mL for volume, then take 110.6 divided by 14)

A bolt is placed in water, raising the water level from 30 mL up to 44 mL. The mass of the bolt is 110.6 g. What is the density of the bolt?

1.04 kg/L

If a student has a mass of 62 kg and a volume of 59.6 L, what is the student's density?

because of differences in density; if density is more than 1 g/mL (the density of water), then object will sink, while less than 1 g/mL means object will float

Why do some objects sink while others will float? If you know the density of a substance, how can you predict whether it will float or sink?

different sizes and numbers of particles

What two factors about molecules create differences in density?

1. L x W x H with a ruler; cm3

2. graduated cylinder for liquids; mL

3. displacement/overflow method (measure amount of liquid that overflows); mL

4. displacement/water rising method (subtract original mL of water from new mL of water when object is placed in it); mL

Name several ways to measure volume and the units of measurement for each strategy.

with a triple beam balance; in grams (or kilograms if we're measuring something like humans)

How does one measure mass? What units is it measured in?

mass (g) divided by volume (cm3 or mL)

How do you calculate density?

a ratio of the amount of matter (mass) in a given amount of space (volume)

What is density?

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