1. Measuring Matter

3. Metric System / System of International Units (SI) There are seven base units. SI term What it DoesAbbreviation Meterfor lengthm Kilogramfor mass; appliedkg to weight in every- day terms Kelvin temperatureK Secondtimes Ampereelectric currentA Candelaluminous intensity cd Moleamount of substancemol

4. Why use Metric It is simple: it only uses 3 base units of measure. Meter: Length Gram: mass Liter: capacity It is simple: uses a base of 10

6. English Units / US Customary Units

7. Mass A measure of how much matter is in an object. http://www.youtube.com/watch?v=BAf6HoVK6JI

8. Weight or Mass? ~Weight is a measure of the force of gravity on you. ~On Earth, all objects are attracted downward by Earth’s Gravity. ~Other planets, the force of gravity maybe more or less. ~On Earth everyday life, weight can be useful in measuring matter of an object. ~Scientist rely on the measurement of mass rather than weight. ~Weight can change depending upon location (gravity)

9. Volume The amount of space that matter occupies. All forms of matter have volume. Finding volume: Volume = Length x Width x Height When you multiply the three measurements, you must multiply the units as well as the numbers. 2 x 2x 2= 2(3)2cm x 2cm x 2cm = 8cm3

10. Volume cm3 is Cubic Centimeter How can you measure the volume of an irregular shape, Put the object in a graduated cylinder containing water and measure the change in volume of the water. http://www.youtube.com/watch?v=GhuDEgdO774

14. Density Substances may have the same mass but don’t fill the same volume. density is the measurement of how much mass is contained in a given volume. To calculate density: Density = Mass volume A unit of density is always a unit of mass. Units of density written: g/cm3 or g/mL http://www.youtube.com/watch?v=BB-SzaZC-Sw