Download
introduction mass density and volume n.
Skip this Video
Loading SlideShow in 5 Seconds..
Introduction MASS DENSITY AND VOLUME PowerPoint Presentation
Download Presentation
Introduction MASS DENSITY AND VOLUME

Introduction MASS DENSITY AND VOLUME

181 Vues Download Presentation
Télécharger la présentation

Introduction MASS DENSITY AND VOLUME

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Introduction MASS DENSITY AND VOLUME

  2. Measuring Mass • Mass - the quantity of matter in an object • standard unit is gram(g) • Measured using a digital scale or triple beam balance

  3. Measuring Volume and Capacity • Volume - the amount of space occupied by an object • standard unit is liter(L) • 1 L = 1000 ml = 1000 cm3 = 1 dm3 • Measured using a graduated cylinder • Capacity - a measure of the volume inside a container

  4. Measuring Volume • Measured with a graduated cylinder • Determine value of each mark on the scale • Read scale using the lowest position of the meniscus • Measure the meniscus at eye level from the center of the meniscus. • In the case of water and most liquids, the meniscus is concave. Mercury produces a convex meniscus.

  5. Displacement • Displacement • Amount of water an object replaces • Equal to its volume

  6. Volume of a Solid, Irregular Object • Displacement - amount of water an object replaces • Procedure • Place graduate beaker beneath spout • Fill the overflow canwith water until water begins to spill • Empty the excess water • Place object to be measured into the overflow can • Remove when water stops flowing out of the can • Measure the displaced water using a graduated cylinder.

  7. Volume of a Solid, Irregular Object • Displacement • Calculate the difference between the initial and final volume measurement.

  8. Volume of a Solid, Regular Object • Volume -length x width x height • V = 2.8 cm x 3.2 cm x 2.5 cm • V = 22.4 cm3 • Measured with a ruler

  9. Calculating Density • Density - a specific property of matter that is related to its mass divided by the volume. • D=M/V • the ratio of mass to volume • used to characterize a substance • each substance has a unique density • Units for density include: • g/mL • g/cm3 • g/cc

  10. Measuring Time • Time • metric unit is second (s)

  11. Measuring Temperature • Temperature - the degree of “hotness” of an object • standard unit is celsius (°C) • measured with a thermometer

  12. Temperature Conversions • Conversion Between Fahrenheit, Celsius, and Kelvin • Example: • Convert 75 ºC to ºF • Convert -10 ºF to ºC

  13. Measurement Unit Conversion • You can convert between units of measurement • within the metric system • between the English system and metric system

  14. Conversion and the Metric System ACS Ms. Grogan

  15. Measurement Unit Conversion • You can convert between units of measurement • within the metric system • between the English system and metric system

  16. Unit Conversion • Let your units do the work for you by simply memorizing connections between units. • Example: How many donuts are in one dozen? • We say: “Twelve donuts in a dozen.” • Or: 12 donuts = 1 dozen donuts • What does any number divided by itself equal? • ONE!

  17. Unit Conversion • This fraction is called a unit factor • Multiplication by a unit factor does not change the amount - only the unit. • Example:How many donuts are in 3.5 dozen? • You can probably do this in your head but try it using the Factor-Label Method.

  18. Unit Conversion Rules • Start with the given information… • Then set up your unit factor… • See that the original unit cancels out… • Then multiply and divide all numbers…

  19. Unit Conversion Practice • Example:Convert 12 gallons to units of quarts.

  20. Unit Conversion Practice • Example:Convert 4 ounces to kilograms.