Measurement-A Measurement-A Common LanguageCommon Language

MassMass

MassMass MassMass is the amount of matter an is the amount of matter an

object hasobject has

MatterMatter:: The material that all The material that all

objects are made up ofobjects are made up of

What is the difference between What is the difference between

massmass and and weight?weight?

WeightWeight is the amount of is the amount of

gravitational pull on an objectgravitational pull on an object

The basic unit of mass is The basic unit of mass is the…the…

The basic unit of mass is the The basic unit of mass is the gramgram..

Example: The weight of one Example: The weight of one sugarsugar packetpacket

US nickel weighs US nickel weighs

about about 5 grams5 grams

Some objects that are Some objects that are

measured in measured in gramsgrams or or gmgm

include:include:

* paper clips * paper clips

* pencils* pencils

* erasers* erasers

Units smaller than gramUnits smaller than gram A unit smaller than a gram is called?A unit smaller than a gram is called?

MilligramMilligram

One gram is how many milligrams?One gram is how many milligrams?

10001000

MedicationsMedications are measured in are measured in

milligrams milligrams or or mgmg

Ex: Ex: 1 Ibuprofen tablet1 Ibuprofen tablet = = 200200 mgmg

Unit larger than a gramUnit larger than a gram

Unit larger than gram isUnit larger than gram is Kilogram Kilogram

or kgor kg

1 kilogram is how many grams?1 kilogram is how many grams?

10001000 One One kilogramkilogram is little more is little more

than than 2 pounds2 pounds ( (2.2 lbs2.2 lbs.).)

One pound bar bells

ProblemProblem

* If a paper clip is * If a paper clip is 10 grams10 grams, how , how many will you need to have many will you need to have

1 kilogram1 kilogram of paperclips of paperclips

1000 divide by 10 = 1000 10 1000 divide by 10 = 1000 10 ==

100 paperclips100 paperclips

** Why use the number 1000?Why use the number 1000?

Because, there are 1000 grams Because, there are 1000 grams in kilogramin kilogram

What are some objects whose What are some objects whose masses can be measured in masses can be measured in

kilograms.kilograms. CarCar

Teacher’s DeskTeacher’s Desk

Desk Top ComputerDesk Top Computer

Can you think of otherCan you think of other

objects?objects?

Coolest Car Ever

Let’s think about this Let’s think about this one!!!!one!!!!

If one kilogram is If one kilogram is 1000 grams1000 grams and one and one

gram is gram is 1000 milligrams, 1000 milligrams, how manyhow many

milligrams in a kilogram???milligrams in a kilogram??? Hint: You will multiplyHint: You will multiply 1000 x 1000 = 1,000,000 or 1 million1000 x 1000 = 1,000,000 or 1 million So, 1 kilogram = 1,000,000 milligramsSo, 1 kilogram = 1,000,000 milligrams How much is 1 milligram?How much is 1 milligram?

About a pinch is saltAbout a pinch is salt

Measuring MassMeasuring Mass How do we measure mass?How do we measure mass? We can use a We can use a scalescale We can use a We can use a triple-beam triple-beam

balancebalance

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

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

Pan

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

Pan Riders

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

Pan Riders

Beams

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

Pan Riders

Beams Pointer

VolumeVolume Volume of LiquidsVolume of Liquids

VolumeVolume VolumeVolume is the amount of matter and is the amount of matter and

space an object takes upspace an object takes up Object can be Object can be solidsolid

Ex: Ex: RockRock Object can be Object can be liquidliquid::

Ex: Ex: JuiceJuice Object can be Object can be gasgas::

Ex: Ex: AirAir

The basic unit for volume of a The basic unit for volume of a

liquid, is the…………?liquid, is the…………?

The The Liter (L).Liter (L).

One liter is……………MillilitersOne liter is……………Milliliters

Remember;Remember;

MilliMilli == 1/1000 or1/1000 or

one-thousandthone-thousandth

10001000

To measure the volume of To measure the volume of smaller liquids, the _________ is smaller liquids, the _________ is

used.used. Milliliter (mL)Milliliter (mL)

How many milliliters in one How many milliliters in one liter? liter?

1000 Milliliters1000 Milliliters

Problem Problem

The Coke bottle is 2 litersThe Coke bottle is 2 liters

How many milliliters is that?How many milliliters is that?

2 2 x 1000 = 2,000 mlx 1000 = 2,000 ml

ProblemProblem

The Minute Maid soda is The Minute Maid soda is

half a half a liter (1/2)liter (1/2)

How many milliliters is that?How many milliliters is that?

500 ml500 ml

The instrument used to measure The instrument used to measure the volume of liquids is called the volume of liquids is called

the…the…

Graduated Graduated cylindercylinder

Laboratory EquipmentLaboratory Equipment What are these What are these

called?called? Graduated CylindersGraduated Cylinders What do we measure What do we measure

with graduated with graduated cylinders?cylinders?

VolumeVolume Which metric units Which metric units

are used to measure are used to measure Volume?Volume?

Liters and millilitersLiters and milliliters

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

MeniscusMeniscus

Observing-Observing- How do we measure How do we measure volume?volume?

We look at the We look at the MeniscusMeniscus What is it?What is it? The curve on the top The curve on the top

surface of watersurface of water How much water is in this How much water is in this

Graduated Cylinder?Graduated Cylinder?

53 milliliters or 53 ml53 milliliters or 53 ml

Bonus:Bonus: Where did the cylinder graduate Where did the cylinder graduate

from?from?

Laboratory Laboratory EquipmentEquipment

What is this What is this

equipment called?equipment called?

A A BeakerBeaker

What is the What is the Volume Volume

of this Beaker?of this Beaker?

250250 milliliters or ml milliliters or ml

What is What is VolumeVolume??

The amount of The amount of mattermatter

and and spacespace as an as an

object takes up object takes up

Laboratory EquipmentLaboratory Equipment Beakers come in assorted sizes:Beakers come in assorted sizes: 10 ml10 ml 50 ml50 ml 100 ml100 ml 250 ml250 ml 500 ml500 ml 1000 ml1000 ml 2000 ml2000 ml Which beaker is Which beaker is 2 liter or 2L?2 liter or 2L? Which beaker is Which beaker is .50 liter or .50L?.50 liter or .50L? Which beaker is Which beaker is .10 liter or .10L?.10 liter or .10L?

2000 ml

500 ml

100 ml

REVIEW QUESTIONSREVIEW QUESTIONS

11. What is weight?. What is weight?AnswerAnswer: The amount of gravitational pull on an : The amount of gravitational pull on an

objectobject2. What is Mass?2. What is Mass?AnswerAnswer: The measure of the amount of matter an : The measure of the amount of matter an object hasobject has3. What is the basic unit of 3. What is the basic unit of MassMass??AnswerAnswer: The gram or gm: The gram or gm4. What is the basic unit of 4. What is the basic unit of VolumeVolume??AnswerAnswer: The liter or L: The liter or L5. What can we use to measure volume?5. What can we use to measure volume?AnswerAnswer: Graduated Cylinder and the Beaker: Graduated Cylinder and the Beaker6. How do we measure volume?6. How do we measure volume?AnswerAnswer: We use the Meniscus: We use the Meniscus7. What is the meniscus?7. What is the meniscus?AnswerAnswer: The curve on the top surface of water: The curve on the top surface of water