Transcript Document 7240034

Chemistry
Jeopardy
Learning Objectives (in ? Form)
• How are elements and compounds similar
yet different? What are some examples of
each?
• How are compounds and mixtures
different?
• What’s the difference between mass and
weight?
• What are units are used to measure volume?
• How can density be determined? How can
density be used to identify substances?
Learning Objectives (in ? Form)
• What’s the difference between a chemical and
physical change? How can you tell which
change occurred?
• How are changes in matter related to changes
in energy (endothermic vs. exothermic)?
• What are the 8 forms of energy related to
changes in matter?
• What are some energy transformations that
occur in the real world?
RULES
1. There will be round robin play and all
questions will be all –play except for the
daily doubles.
2. The teams who answers correctly win the
point value of the question.
3. If a team answers a daily double
incorrectly, then that team will lose the
number of points they bid, and any other
team can “ring in” by raising their hand
and answer at that point.
Let’s
4. There are two daily doubles available. play
Types of M, V, D Changes in
Matter
Matter
Matter &
Energy
100
100
100
100
200
200
200
200
300
300
300
300
400
400
400
400
500
500
500
500
Final Jeopardy
Physics
Leftovers
200
Types of Matter for 100
Which of the diagram boxes (A, B, C, or
D) from p. 38 represents a compound?
Which one represents a mixture?
Compound- D
Mixture- C
Types of Matter for 200
Which of the following can be broken down
by physical means: Elements, Compounds,
Mixtures? Which one can be broken down
by chemical means: Elements, Compounds,
Mixtures?
Mixtures- can be physically broken down
Compounds- can be chemically broken
down
Types of Matter for 300
What are 2 differences between a compound
and a mixture?
A compound’s parts are bonded together
in a set ratio while a mixture’s are not. A
mixture’s parts can be separated by
physical means while a compounds
cannot.
Types of Matter for 400
How do the physical and chemical
properties of a compound compare to the
elements that make up that compound?
The elements have different properties than
the compound they make up.
Types of Matter for 500
Identify the following as an element, compound,
homogeneous mixture, or heterogeneous
mixture: carbon monoxide (CO), nitrogen gas
(N2), sugar dissolved in water, a pizza.
Compound (CO), element (N2), homogeneous
mixture (sugar water), heterogeneous mixture
(pizza)
M, V, D for 100
The measurement of the force of gravity
acting on your body is called your
____________. How is this measurement
of force different from mass?
Weight- changes depending on the force of
gravity at various locations
M, V, D for 200
What would be your mass if you are 50 kg
on Earth and you go to a planet with 5 times
the gravity of Earth? What would your
weight be if you are 110 lbs. on Earth and
you to the same planet?
Mass is still 50 kg
Weight = 110 x 5 = 550 lbs.
M, V, D for 300
The amount of matter contained in a certain
volume is called ___________. How can
this be used to determine if an object will
sink or float in water? Provide water’s
density in your answer.
Density- more dense substances sink
(more than 1 g/mL) , less dense
substances float (less than 1 g/mL)
M, V, D for 400
Suppose an object has a
mass of 43 g and a
volume of only 2 mL.
What is the likely
identity of the object?
Platinum
Substance
Density
(g/mL)
Water
1.0
Oak Wood
0.85
Lead
11.3
Platinum
21.5
M, V, D
DAILY DOUBLE!!!
Suppose you obtained a sample
of oak wood and platinum both
with a volume of 5 cm3. Which
would have the greater mass?
Explain your answer.
Platinum- it has a higher
density so if the volumes were
equal, then the platinum
sample have to have a greater
mass.
Substance
Density
(g/mL)
Water
1.0
Oak Wood
0.85
Lead
11.3
Platinum
21.5
Changes in Matter for 100
What’s the difference between a chemical
and a physical change?
Chemical- new substance(s) are formed
Physical- still the same substance after the
change
Changes in Matter for 200
If you are examining numerous changes in
matter, then what signs will you look for to
see if the change is a chemical change?
Bubbles of gas/fizzing, color change, light
and/or heat is given off
Changes in Matter for 300
Which of the following are physical properties: water
freezes at 0oC, iron rusts, silverware becomes
tarnished, dry ice (CO2) changes into a gas, copper
metal is shaped into sheets of metal?
Physical properties = Water freezing, dry ice
becoming a gas, copper being made into metal
sheets.
Changes in Matter
DAILY DOUBLE!!!
Which of the following properties can
be used to help identify a substance:
density, melting point, boiling point,
chemical reactivity, physical
appearance?
ALL OF THEM CAN!
Changes in Matter for 500
Identify the following as a chemical or a
physical change: Ice melting, combustion,
electrolysis, glass breaking, frying an egg.
Ice melting & glass breaking- Physical
Changes.
Electrolysis, Combustion, Frying an eggChemical Changes.
Matter & Energy for 100
Whenever matter changes, there is also a
change in ___________. Is this change
always noticeable?
Energy; No
Matter & Energy for 200
The type of energy which includes visible
light, X-rays, UV rays, and all other types
of radiation is called ____________ energy.
Electromagnetic
Matter & Energy for 300
What type of temperature change would you
expect for a typical exothermic process?
Endothermic process? Explain your answer.
Exothermic- temp. goes up/positive (gives off
energy)
Endothermic- temp. goes down/negative (takes
energy out of the surroundings)
Matter & Energy for 400
Identify the energy transformations that take place
for the following processes: combustion,
photosynthesis, using your TV.
Combustion- chemical into thermal and
electromagnetic
Photosynthesis- Solar/electromagnetic into
chemical
TV- electrical into sound and electromagnetic
Matter & Energy for 500
Classify the following processes as an endothermic or
exothermic change and as a chemical or physical
change: combustion, photosynthesis, sweat
evaporating from your skin. Note that sweating (well,
the sweat leaving your skin) is your body’s cooling
process.
Combustion- Chemical & Exothermic
Photosynthesis- Chemical & Endothermic
Sweating Evaporating- Physical & Endothermic
Leftovers for 200
Which of the following are units of volume:
grams, milliliters (mL), g/mL, centimeters
cubed (cm3), Liters (L)?
mL, cm3, & Liters
Identifying Substances
You are given 5 different liquids: I, II, III, IV, V. Rank them
from most dense to least dense based upon the following
information.
Within five different containers: I rests on top of II, V rests
on top of I, IV rests on top of V, II rests on top of III.
Most dense to least dense:
III, II, I, V, IV