Whimsical Wednesday
Take out homework (don’t TURN in YET! KEEP at
your desk!)
Answer the Catalyst below:
1. How would you separate a mixture of alcohol
and water if:
Boiling Point of Alcohol is 77 degrees Celsius
Boiling Point of Water is 100 degrees Celsius
2. Name 2 heterogeneous mixtures
BIG GOAL: Class average of
80% Mastery on all Tests and
Quizzes!
Explosion
Practice!
Explosion: Rapid fire questions!
1. What day is today?
2. What is the scientific method?
15.
3. What is the first step to the
scientific method?
16.
4. What is an experimental problem?
5. What is a hypothesis?
17.
6. What is the Passaic mascot?
18.
7. What is a Pure Substance?
19.
8. What are the 2 types of Pure
20.
Substances?
21.
9. Name 3 elements.
22.
10. Name 2 Compounds.
23.
11. What is a Mixture?
12. What are the 2 types of Mixtures?
13. What is a homogeneous Mixture
14. Give 1 example of a Homogeneous
Mixture.
Give 1 example of a
Heterogeneous Mixture.
What is the Law of Conservation of
Mass?
What is 9x8?
What is 7x11?
What is 6x12?
What is 12 x 12?
What is the square root of 81?
What is the square root of 169?
Spell Chemistry.
Exemplary Lab
Report
Introduction!
Introduction:
Alka Seltzer is commonly used by many people as a way to
relieve pain, mostly dealing with issues in the stomach.
Background
The drug was developed by Maurice Treneer was
information
specifically marketed for relief of minor aches, pains,
inflammation, fever, headache, heartburn, sour stomach, Prior
indigestion, hangovers, and neutralize excess stomach
observations
acid. Alka-Seltzer was launched in 1931 and it is owned by
Bayer Schering Pharma. When doing the experiment with
Alka Seltzer and water, it was observed that it quickly
Experimental
dissolved and rose to the top. The experimental question question!
“How long does it take Alka-Seltzer react in different types
of liquids?” was developed and tested. It was hypothesized Stated
that Alka-Seltzer would dissolve quicker in alcohol. Overall Hypothesis
the goal in this experiment was to see how Alka-Seltzer
would dissolve and how long it took in different liquids
Stated
because it was dissolving moderately fast in water.
purpose
Exemplary Lab
Report Materials
and Procedure!
Materials:
- 100 mL Sprite
- 100 mL Water
- 100 mL isopropyl alcohol
- 100 mL Apple Juice
- 4 one-half tablets of Alka Seltzer
- 1 250 mL beaker
- 1 timer
Quantitative amounts!
Procedure:
Quantitative
Step 1: bring all materials to group work space
amounts!
Step 2: Pour 100 mL of water into the 250 mL beaker
Step 3: Drop 1 one-half Alka-Seltzer tablet into the
beaker and begin the timer when the tablet hits the Specific
water
Actions!
Step 4: Stop the time once the tablet has completely
dissolved (bubbles may still be present but tablet is
gone).
Refers to
Step 5: Record Data and observations
previous
Step 6: Rinse beaker with water and dry with paper towel
Step 7: Repeat Steps 2-6 with Sprite, Isopropyl Alcohol, and steps
then Apple Juice (all in separate tests)
Exemplary Lab
Report Conclusion!
Conclusion:
Restated the
This lab was performed in order to
Purpose
determine the reaction time of AlkaReferred to
Seltzer to different liquids. Figure 1 shows Figures and
added
that the fastest reaction time was in water quantitative
values
at 24.31 seconds. The results are not
close to the hypothesis in which it was
Restated
stated that alcohol would have the fastest hypothesis
and said if it
reaction time. Alcohol actually had the
was correct
or incorrect
longest reaction time. It took so long,
that it was impossible to get an exact
reaction time. Although the experiment
appeared accurate, there may have been
errors.
Many things went wrong such as; non- Pointed
out
accurate timing, and mixed liquids.
possible
Timing was not accurate based on
errors
slow response to when the tablets
were placed in the beaker. Impurities Recommenin the beaker may include mixed
dations
chemicals due to dirty glassware. This
cold be improved by having a person Overall: was to
with faster reflexes time the reaction. the point and
easy to read.
Also, having someone that is more
No fluff!
rd
And…
It’s
in
3
careful clean out the glassware.
PERSON!
States of Matter
SOLID
• Hold their own
shape
• Particles are packed
together
• Particles vibrate in
place
• Fixed Volume
SOLID
• Take the shape of
the container
• Pourable
• Particles Slide past
each other
• Fixed Volume
GAS
• Expands to fill the
container
• Particles have
HIGH energy
• Takes the SHAPE
of the container
Energy INCREASES as you go from
solid  liquid  gas
That’s why we heat it up! To increase
the energy of the sample!
Energy Increases!
Changes in States
of Matter