Chemical Changes Lab Chemistry Name: Per. Post-laboratory Questions: Answer the following questions in complete sentences and thoughts. Use the data from the lab to support your answers. 1. What are some physical properties we should measure/observe? weight, volume, temp, color 2. What are some chemical properties we should measure/observe? turning aluminum Date: 5. State the law of conservation of matter. inte COPPer 3. How do you decide whether an observed property of matter is a physical or a chemical property? Because I observed by if it can not be Chansed its a chemical property and Physical propertie is something I can chans 4. What are some factors (variables) in this experiment that will affect your results? How will those factors affect your results? 6. In a certain reaction, 125.0 g of pentane gas reacts with 175.0 g of oxygen gas to produce 150.0 g of water and an unknown amount of carbon dioxide. a. Write a word equation for this reaction:
Chemical Changes Lab Chemistry Name: Per. Post-laboratory Questions: Answer the following questions in complete sentences and thoughts. Use the data from the lab to support your answers. 1. What are some physical properties we should measure/observe? weight, volume, temp, color 2. What are some chemical properties we should measure/observe? turning aluminum Date: 5. State the law of conservation of matter. inte COPPer 3. How do you decide whether an observed property of matter is a physical or a chemical property? Because I observed by if it can not be Chansed its a chemical property and Physical propertie is something I can chans 4. What are some factors (variables) in this experiment that will affect your results? How will those factors affect your results? 6. In a certain reaction, 125.0 g of pentane gas reacts with 175.0 g of oxygen gas to produce 150.0 g of water and an unknown amount of carbon dioxide. a. Write a word equation for this reaction:
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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Transcribed Image Text:Name:
Chemical Changes Lab
Chemistry
2. What are some chemical properties we should measure/observe?
aluminum
turning
Date:
Post-laboratory Questions: Answer the following questions in complete sentences and thoughts. Use
the data from the lab to support your answers.
1. What are some physical properties we should measure/observe?
weight, volume, temp, color
5. State the law of conservation of matter.
inte COPPer
Per.
3. How do you decide whether an observed property of matter is a physical or a chemical property?
Because I observed by if it can not
be
Chansed
a chemical property and
is something I can change
4. What are some factors (variables) in this experiment that will affect your results? How will those factors
affect your results?
its
Propertie
Physical
6. In a certain reaction, 125.0 g of pentane gas reacts with 175.0 g of oxygen gas to produce 150.0 g of
water and an unknown amount of carbon dioxide.
a. Write a word equation for this reaction:
b. How much carbon dioxide will be produced? Explain your answer.
Transcribed Image Text:Name:
Data Table: Observations of physical and chemical properties
System
Observation of dry copper (II) chloride (g)
Observation of aluminum foil
Observation of water
Volume of water (ml)
Observation of Unstirred
copper (II) chloride in water
Observation of Stirred solution of
copper (II) chloride in water
Initial temperature of copper (II) chloride
and water
Observation Copper (II) chloride solution
plus aluminum foil
Maximum temperature of reaction (°C)
Final temperature (°C)
(After observing aluminum for 5 minutes)
Comparison of Results to Classmates
Chemical Changes Lab
Chemistry
mass
of system before
mass of System after
green
Date:
6
Observations/Data
Shitney smooth, respective,
Blue, flakey, small.
•Shiney, Smooth, reflectivo
Clear, orderless, Travid
25.0ml
light blue
Per.
21.60°
It likes
Sravy and the
Copper is red the glass is warmen. It
smells bad, it has condersation.
783 (°
45.3°
we
asree we had very
Similar results this whers that the
was a SUCOSS.
everpiment
170829
170.549
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