ANNOUNCEMENTS:
• RED RIBBON WEEK! TOMORROW: SUPERHERO DAY!
• Substitute Teacher & Assembly Friday, November 6th, 2015 (I will be in building)
• NO SCHOOL
(Veteran’s Day)
__________________________________________________________________________________________________
Why does Matter, matter?
Sub-question: What is the importance of units in science?
Essential Question:
PREVIEW:
Read the following passage and work the problems below…
THE IMPORTANCE OF UNITS: When crossing the border into Canada, American motorists are
often surprised to see speed limits of “90” or “100”. If they don’t realize that the Canadians
measure speed in kilometers/hr while Americans measure in miles/hr (1.00 mile/hr = 1.61
kilometers/hr; 60 miles/hr = 97 km/hr) they may soon be in trouble with the law. If, for example,
an American motorist accelerated until her speedometer (measured in miles/hr) reaches “100,”
she will be traveling 38 miles/hr over the posted speed limit of 100 km/hr since the speed of
100 km/hr is equal to only 62 miles/hr. As this example illustrates, measurements without units
are meaningless and may lead to serious misunderstandings. Everything that can be measured
must be expressed with appropriate units.
UNITS IN EVERYDAY LIFE: We use units every day, often without even realizing it. In the
statements that follow, you will find a wide variety of interesting facts, but each is missing a
crucial piece of information – the dimensions (units)! All the statements are meaningless until
you supply the appropriate units. On the basis of your experiences, try to match the appropriate
units from the list provided.
ID CCSS STANDARDS:
6.S.2.1.3 Compare densities of equal volumes of a solid, a liquid, or a gas.
6.S.2.1.4 Describe the effect of temperature on density.
In journal: Complete the following by matching the appropriate units from the list provided.
carats
inches
megabars
tons
grams/mL
liters
stories
feet
kilowatt-hours
pounds
degrees Fahrenheit
kilometers
milligrams
degrees Celsius
kilograms
miles per hour
cm
kcal (Cal)
miles
yards
1. America’s tallest building (One World Trade Center in New York) is 104 ______ high.
2. The Amazon River in South America is 6296 ____ long.
3. The highest recorded temperature in the United States was in Death Valley, California,
when the mercury reached 57 ____!
4. The world record rainfall occurred in Cherrapunji, India, where 1042 ____ of rain fell in
one year.
5. The largest recorded hailstone to ever fall landed in Coffeyville, Kansas, in 1979. It had a
diameter of 44.5 ____!
6. The Empire State Building in New York is 1250 _____ high.
7. The Nile is the world’s longest river. It is 4180 ____ long.
8. The longest punt in NFL history was by Steve O’Neal of the New York Jets. He kicked the
football 98____.
9. The largest seed in the world is that of the coc-de-mer coconut tree, which may weigh as
much as 40 ___!
10. The world’s largest meteorite is located in Southwest Africa. It weighs 650 ____.
11.The most popular soft drink in the world is currently Coca Cola®. More than 210 million
____ were consumed each day in 1990.
12.The largest diamond in the world was mined in from South Africa in 1905 and weighs 1306
_____.
13.Earth is the densest of the nine planets, with an average density of 5.515 ______.
14.The world’s fastest aircraft is the Lockheed SR-71 Blackbird, clocking a record speed of
2,193.67 _____.
15.The largest gold nugget ever found had a mass of 100 _____!
16. One large chicken egg contains an average of 274 ____ cholesterol.
17. A 16-year old male requires an average of 2800 ______ of energy per day while an
average 16-year old female requires 2100 ____.
18. The United States produces & consumes more electric energy than any other nation.
Each year the United States produces over 2500 billion ____.
19.The largest pressure ever developed in a laboratory was 1.70 _____, used to solidify
hydrogen in 1978.
20. The coldest temperature ever recorded was -128.6 ____ in Vostok, Antarctica, in 1983.
ID CCSS STANDARDS:
6.S.2.1.3 Compare densities of equal volumes of a solid, a liquid, or a gas.
6.S.2.1.4 Describe the effect of temperature on density.
PREVIEW:
What does SI Units stand for?
International System of Units: a system of physical units (SI Units ) based on the
meter, kilogram, second, ampere, kelvin, candela, and mole, together with a set
of prefixes to indicate multiplication or division by a power of ten.
Factor
Table 1: SI Prefixes and Symbols
Decimal Representation
Prefix
Symbol
1018
1,000,000,000,000,000,000
exa
E
1015
1,000,000,000,000,000
peta
P
1012
1,000,000,000,000
tera
T
109
1,000,000,000
giga
G
106
1,000,000
mega
M
103
1,000
kilo
k
102
100
hecto
h
101
10
deka
da
100
1
10-1
0.1
deci
d
10-2
0.01
centi
c
10-3
0.001
milli
m
10-6
0.000 001
micro
m
10-9
0.000 000 001
nano
n
10-12
0.000 000 000 001
pico
p
10-15
0.000 000 000 000 001
femto
f
10-18
0.000 000 000 000 000 001
atto
a
https://www.youtube.com/watch?v=7N0lRJLwpPI
https://www.youtube.com/watch?v=7N0lRJLwpPI
ID CCSS STANDARDS:
6.S.2.1.3 Compare densities of equal volumes of a solid, a liquid, or a gas.
6.S.2.1.4 Describe the effect of temperature on density.
REVIEW/PREVIEW:
What is a law?
Law: A rule describing a consistent pattern in Nature. It happens
every time all the time.
What does conservation mean?
Conservation is the act of preserving, guarding, or protecting.
What is mass?
Mass: the amount of matter a substance has.
What is the Law of Conservation of Mass?
Law of Conservation of Mass - a fundamental principle of science
that states that matter cannot be created or destroyed in an
isolated chemical reaction -- only changed.
ID CCSS STANDARDS:
6.S.2.1.3 Compare densities of equal volumes of a solid, a liquid, or a gas.
6.S.2.1.4 Describe the effect of temperature on density.
PREVIEW:
What is the difference between an element and a compound?
Chemical Element -- a pure chemical substance consisting of
a single type of atom, distinguished by its atomic number, found
on the Periodic Table of Elements.
Chemical Compound -- a pure chemical substance consisting
of two or more different chemical elements that can be
separated into simpler substances by chemical reactions.
Draw a Venn Diagram Comparing/Contratins the two:
Element:
Compound:
ID CCSS STANDARDS:
6.S.2.1.3 Compare densities of equal volumes of a solid, a liquid, or a gas.
6.S.2.1.4 Describe the effect of temperature on density.
PREVIEW:
What is the smallest unit of each an element and a compound
called?
The smallest unit of elements are called atoms.
The smallest unit of compound are called molecules.
PREVIEW:
Exothermic Reactions: reactions produce heat.
Endothermic Reactions: require heat to enable the reaction to occur.
What is a catalyst?
Catalyst – substance/energy source that increases the rate of or triggers a
chemical reaction without itself undergoing any permanent chemical
change.
What does it mean by a yield during chemical reactions?
In chemistry, yield, also referred to as reaction yield, is the amount of product
obtained in a chemical reaction of the reactants. (like “equals” in math)
Photosynthesis Reaction:
ID CCSS STANDARDS:
6.S.2.1.3 Compare densities of equal volumes of a solid, a liquid, or a gas.
6.S.2.1.4 Describe the effect of temperature on density.
SUNLIGHT
(catalyst)
__ H2O + __ CO2
WATER
__ C6H12O6 + __ O2
GLUCOSE
CARBON DIOXIDE
REACTANTS
“YIELDS”
PRODUCTS
List as many types of chemical change as you can.
ID CCSS STANDARDS:
6.S.2.1.3 Compare densities of equal volumes of a solid, a liquid, or a gas.
6.S.2.1.4 Describe the effect of temperature on density.
OXYGEN