Aim: What is density and how can it be measured?

Do Now: What is the difference between something being dense and something being heavy?

Heavy Dense

Matter

What is mass?Mass is a measurement of how

much matter is in the object.Units

English vs. MetricWhich is Larger?

1. 1 Pound or 100 Grams

2. 1 Kilogram or 1 Pound

3. 1 Ounce or 1000 Milligram

Mass

Measuring Mass

What is Volume?Volume is a measure of the space occupied by a

sample of matterBasic Unit is a liter (L or l)

1 Liter (l) = 1000 milliliter (ml)1milliliter (ml) = 1cm3 (1c.c) = 1 gram

Which is larger?

A.1 liter or 1500 milliliters

B.200 milliliters or 1.2 liters

C.12 cm3 or 1.2 milliliters

Measuring Volume

Measuring Solid Volume

Density • Density is ratio of mass of an object to its volume.• Density is an

intensive property; an intensive property is a property that depends on the type of matter in a sample, not the amount of matter.

Sample Problems

1.Your teacher gives you a little square block metal which is exactly 1 centimeter cubed. It is small, but weighs 4.5 grams. What is its density?

2.A piece of metal weighs 3 grams and has a density of 2.70 grams per cubic centimeter. What must be its volume?