Volume

Mass

Length

Conversions (ladder or jumping method)

These two zeros are not significant

Metric Conversions

To convert a metric unit, you move the decimal point over however many places the new unit is. If you are going from a small unit to a larger unit you move the decimal to the

left

. If you are going from a large unit to a smaller unit, you move the decimal to the

right

.

For example, you need to convert 18 cm to Dm. Find the decimal point. It is after the eight in eighteen, "18.", and move the decimal over 3 places to the left to reach dekameters like the picture shows. 18 cm = 0.018 dam

Next, add zeros in the empty spaces of where the decimal has been moved. ALWAYS ADD A "COURTESY" ZERO IN FRONT OF THE DECIMAL POINT. This helps the decimal stand out.Your final number should be 0.018 dekameters (Dm).

Tools Used in the Lab

Graduated Cylinder- Used to measure the volume of a liquid using small or large metric measurements. They are used for more accurate, precise numbers.

Beaker- Used to measure the volume of a liquid using larger metric measurements.

They are generally not used to get a precise measurement.

Triple Beam Balance and Electronic Balance- used to measure the mass of an object. Used for precise measurements.

More Tools Used in the Lab

Metric Ruler- Used to measure the

length

of an object no longer than 30.5 cm long. Includes inches, centimeters and millimeters. Also used to measure

volume

of regular shaped objects.

Meter Stick- Used to measure the length of an object no longer than 100 cm long. Includes inches, centimeters, and millimeters.

Pipette- Used to suck up a liquid and then distribute it into another container in very small amounts. Pipettes are not used for measuring.

Topics

8 basic prefixes - mnemonic device

K

ind

H

enry

D

ied

b

y

d

rinking

c

hocolate

m

ilk

King (K)-

kilo- 1000x

Henry (H)-

hecto- 100x

Died (D)-

deca- 10x

by (B)-

base unit

stands for

gram, liter, meter

.

drinking (d)-

deci (0.10)

chocolate (c)-

centi (0.01)

milk (m)-

milli (0.001)

What are the Basic Metric Units and Prefixes of the Metric System?

Volume

Length

Density

Mass

Mass is the amount of matter in an object. Mass is measured in

grams

. There is no formula for mass. You would use a triple beam balance or an electronic balance to find mass.

Mass is constant.

Weight is not the same as mass. If an object has a mass of 100 kg on Earth.....it will also have a mass of 100 kg on the moon. However, that same object would weigh 220 pounds on Earth, but on the moon its weight would be 36.5 pounds.

Mass

is a

comparative

measure (like two things on a see saw) where as

weight

is the measure of the

force of gravity

. Gravity changes depending on where you are. Two things on a see saw will balance anywhere.

Volume is how much space something takes up. Volume is measured in liters or

cubic centimeters.

The formula for volume of a solid is LxWxH. To find volume of a liquid or an irregular shaped object, use a graduated cylinder. To find the volume of a regular shaped object, use a ruler.

Length is how long, high, or wide an object is. To find length, you would use a metric ruler or a meter stick. The

meter

is the unit for length.

**The Metric System**

Important : There is

ALWAYS

a

DECIMAL

in every single digit. We often do not "see" it ( when we write whole numbers like 20 or 564) but it is always, always, always there.

The decimal is found for all eternity between the ones and tenths place.

Once again........

What are the

abbreviations

of the prefixes

used in the metric

system?

volume

You need to memorize the indicated abbreviations

Let's Sing

An

Erlenmeyer flask

is a cone-shaped container with neck, so you can hold the flask or attach a clamp or use a stopper.

Chorus

Meters, liters, and grams, now you donʼt have to cram

For your exam on the metric system. Repeat

Let me start with ways you can measure a distance, length, or height,

Mad tall or super small, one of these will do you right.

If you try walkinʼ a meter, itʼs easy to complete

Because a meterʼs just a little bit more than 3 feet.

But if youʼre walkinʼ a kilometer itʼs gonna take a while,

Itʼs 1000 meters, thatʼs over half a mile!

A centimeterʼs dinky, the width of your pinky,

100 of them go into a meter, you still with me?

Thereʼs another kind of meter smaller than that,

Itʼs not very fat, itʼs called a millimeter in fact, and itʼs

Tiny. 1000 of them in a meter fit,

Thatʼs 10 in a centimeter, and thatʼs it!

Chorus

Meters, liters, and grams, now you donʼt have to cram

For your exam on the metric system.

Verse II

Now weʼre movinʼ on to the liters, measuring liquids in containers,

Weʼve only got 2, it wonʼt take long to explain this:

A liter, itʼs half a big bottle of soda pop,

And a milliliter, itʼs just about 20 drops.

Thereʼs 1000 milliliters in a liter you know,

So if you got both of those youʼre good to go.

So now we can move on to the grams, measuring mass,

Kilograms, milligrams, yeah weʼre going to pass

Itʼs pretty simple. A paper clip weighs about a gram.

A big textbook is a kilogram, man, but a

Milligram, thatʼs a little harder to slice

Because 10 milligrams is about a grain of rice.

1000 milligrams, is a gram.

1000 grams in a kilogram.

Now we got grams and we also got liters,

Put them all together with the meters.

Chorus

Meters, liters, and grams, now you donʼt have to cram

For your exam on the metric system. Repeat

Let me start with ways you can measure a distance, length, or height,

Mad tall or super small, one of these will do you right.

If you try walkinʼ a meter, itʼs easy to complete

Because a meterʼs just a little bit more than 3 feet.

But if youʼre walkinʼ a kilometer itʼs gonna take a while,

Itʼs 1000 meters, thatʼs over half a mile!

A centimeterʼs dinky, the width of your pinky,

100 of them go into a meter, you still with me?

Thereʼs another kind of meter smaller than that,

Itʼs not very fat, itʼs called a millimeter in fact, and itʼs

Tiny. 1000 of them in a meter fit,

Thatʼs 10 in a centimeter, and thatʼs it!

Chorus

Meters, liters, and grams, now you donʼt have to cram

For your exam on the metric system.

Verse II

Now weʼre movinʼ on to the liters, measuring liquids in containers,

Weʼve only got 2, it wonʼt take long to explain this:

A liter, itʼs half a big bottle of soda pop,

And a milliliter, itʼs just about 20 drops.

Thereʼs 1000 milliliters in a liter you know,

So if you got both of those youʼre good to go.

So now we can move on to the grams, measuring mass,

Kilograms, milligrams, yeah weʼre going to pass

Itʼs pretty simple. A paper clip mass is about a gram.

A big textbook is a kilogram, man, but a

Milligram, thatʼs a little harder to slice

Because 10 milligrams is about a grain of rice.

1000 milligrams, is a gram.

1000 grams in a kilogram.

Now we got grams and we also got liters,

Put them all together with the meters.

SI Units

mass - gram (g)

volume - liter (L)

length - meter (m)

temp - Celsius