Measurement-A Common Language Mass

Mass  Mass is the amount of matter an object has  Matter: The material that all objects are made up of  What is the difference between mass and weight?  Weight is the amount of gravitational pull on an object

The basic unit of mass is the…  The basic unit of mass is the gram. Example: The weight of one sugar packet Example: The weight of one sugar packet  US nickel weighs about 5 grams about 5 grams

:  Some objects that are measured in grams or gm measured in grams or gm include: include: * paper clips * paper clips * pencils * pencils * erasers * erasers

Units smaller than gram AAAA unit smaller than a gram is called? Milligram OOOOne gram is how many milligrams? 1000 MMMMedications are measured in milligrams or mg Ex: 1 Ibuprofen tablet = 200 mg

Unit larger than a gram  U U U Unit larger than gram is Kilogram or kg 1111 kilogram is how many grams? 1000  O O O One kilogram is little more than 2 pounds (2.2 lbs.) One pound bar bells

Problem * If a paper clip is 10 grams, how many will you need to have 1 kilogram of paperclips 1000 divide by 10 = = 100 paperclips * Why use the number 1000? Because, there are 1000 grams in kilogram

What are some objects whose masses can be measured in kilograms.  Car  Teacher’s Desk  Desk Top Computer  Can you think of other objects? objects? Coolest Car Ever

Let’s think about this one!!!!  I I I If one kilogram is 1000 grams and one gram is 1000 milligrams, how many milligrams in a kilogram???  H H H Hint: You will multiply  1 1 1 1000 x 1000 = 1,000,000 or 1 million  S S S So, 1 kilogram = 1,000,000 milligrams  H H H How much is 1 milligram? About a pinch is salt

Measuring Mass  How do we measure mass?  We can use a scale  We can use a triple-beam balance balance

Label the different parts of the triple-beam balance.

Pan

Label the different parts of the triple-beam balance. Pan Riders

Label the different parts of the triple-beam balance. Pan Riders Beams

Label the different parts of the triple-beam balance. Pan Riders Beams Pointer

Volume Volume of Liquids

Volume VVVVolume is the amount of matter and space an object takes up OOOObject can be solid Ex: Rock OOOObject can be liquid: Ex: Juice OOOObject can be gas: Ex: Air

The basic unit for volume of a liquid, is the…………?  The Liter (L).  One liter is……………Milliliters Remember; Milli = 1/1000 or one-thousandth one-thousandth 1000

To measure the volume of smaller liquids, the _________ is used.  Milliliter (mL)  How many milliliters in one liter? 1000 Milliliters 1000 Milliliters

Problem  The Coke bottle is 2 liters How many milliliters is that? How many milliliters is that? 2 x 1000 = 2,000 ml

Problem TTTThe Minute Maid soda is half a liter (1/2) How many milliliters is that? 500 ml

The instrument used to measure the volume of liquids is called the…  Graduated cylinder

Laboratory Equipment WWWWhat are these called? GGGGraduated Cylinders WWWWhat do we measure with graduated cylinders?  V V V Volume WWWWhich metric units are used to measure Volume? LLLLiters and milliliters

 The curve on the top surface of water in the graduated cylinder is called? Meniscus Meniscus

Observing- How do we measure volume? WWWWe look at the Meniscus WWWWhat is it? TTTThe curve on the top surface of water HHHHow much water is in this Graduated Cylinder? 53 milliliters or 53 ml Bonus: Where did the cylinder graduate from?

Laboratory Equipment WWWWhat is this equipment called? AAAA Beaker WWWWhat is the Volume of this Beaker? 222250 milliliters or ml WWWWhat is Volume? TTTThe amount of matter and space as an object takes up

 B eakers come in assorted sizes:  1 0 ml  5 0 ml  1 00 ml  2 50 ml  5 00 ml  ml  ml WWWWhich beaker is 2 liter or 2L? WWWWhich beaker is.50 liter or.50L? WWWWhich beaker is.10 liter or.10L? 2000 ml 500 ml 100 ml Which beaker is

REVIEW QUESTIONS 1. What is weight? Answer: The amount of gravitational pull on an object 2. What is Mass? Answer: The measure of the amount of matter an object has 3. What is the basic unit of Mass? Answer: The gram or gm 4. What is the basic unit of Volume? Answer: The liter or L 5. What can we use to measure volume? Answer: Graduated Cylinder and the Beaker 6. How do we measure volume? Answer: We use the Meniscus 7. What is the meniscus? Answer: The curve on the top surface of water