100 Points and Brainliest to the correct answer, if you type a random answer I will reportHow can matter and energy be described and conserved in a variety of systems? Hypotheses: As you view each scenario, make a prediction about what will occur when prompted by the video. The Iced Tea Debate The Salty Soup Predictions—What do you think will happen? Materials: 1. Demonstrations: “The Iced Tea Debate” and “The Salty Soup.” Procedures: 1. Observe and analyze the following video demonstrations: “The Iced Tea Debate” and “The Salty Soup.” 2. Use the data table to record observations on physical and chemical change, and the conservation of matter and energy. Variables: List the variables for The Iced Tea Debate: Independent: Dependent: Control: List the variables for The Salty Soup: Independent: Dependent: Control: Data and Observations: Record your detailed observations and draw some brief conclusions in the table below. The Iced Tea Debate The Salty Soup Describe the physical changes you observed. Describe the chemical changes you observed. Describe the instances of conservation of matter and energy in each demonstration. Questions and Conclusion 1. How was matter and energy conserved in each demonstration? 2. What phase changes did you observe? 3. What kind/s of energy transfers did you notice in each scenario? 4. Identify an example of matter and energy conservation in the world around you. Conclusion: How did your observations support or contradict your predictions? Describe an experiment that could further explore physical or chemical change.
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Final answer:
The experiments 'The Iced Tea Debate' and 'The Salty Soup' illustrate different physical changes and energy transfers in the context of the Law of Conservation of Matter and Energy.
Explanation:
In 'The Iced Tea Debate', the independent variable could be the temperature of the tea, the dependent variable could be how quickly the ice melts and the control variable could be the amount of tea used in each trial. The Law of Conservation of Matter and Energy states that matter and energy cannot be created or destroyed in an isolated system. In this case, the ice melting is a physical change, and the energy transferred is thermal energy from the tea to the ice.
In 'The Salty Soup,' the independent variable could be the amount of salt added, the dependent variable could be the taste of the soup, and the control variable could be the type of soup used. The added salt dissolving into the soup is a physical change, and no noticeable energy transfer occurs.
One example of conservation of matter and energy in everyday life is the process of photosynthesis in plants. The plant absorbs sunlight (energy), carbon dioxide, and water, and converts them into glucose and oxygen, thus conserving matter and energy.
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Final answer:
In these demonstrations, matter and energy were conserved, as total mass and energy stayed constant. Significant phase and energy transformations were observed, like the melting of ice and the dissolving of salt. The total mass before and after the transformations remained the same, demonstrating the law of conservation of mass.
Explanation:
Matter and energy can be described as being conserved in a variety of systems because they can neither be created nor destroyed, only transferred between objects or converted from one form to another. In 'The Iced Tea Debate' and 'The Salty Soup' demonstrations,
Variables would include: Independent variable: the substance added (be it ice tea or salt); Dependent variable: physical and chemical changes observed; Control variables: the initial conditions of the system, like temperature and pressure.
When analyzing the results of each of these demonstrations, you should observe energy transfers, in the form of heat in both scenarios.
Moreover, there would be conservation of matter observable in both scenarios. This can be proven by extracting and weighing all substances before and after their reactions, summing up the total mass, which should stay constant.
To answer the questions:
- In each demonstration, matter was conserved as the total mass remained constant despite the transformations. Energy was conserved as it was converted from one form to another.
- Phase changes observed would be the melting of ice in the Iced Tea and the dissolving of salt in the soup.
- Energy transfer in both scenarios was likely in the form of heat, from the hotter substance to the colder one.
- An example of matter and energy conservation in the world around you could be photosynthesis.
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Related Questions
A 25°C sample of gas has a volume of 5.0 L. What will it’s volume be if it is heated to 50.0°C?
Select all of the answers that apply.A meteorologist predicts fog in the morning over lakes and river bottoms because of the atmospheric conditions and their interactions with the _____. lithosphere hydrosphere biosphere geosphere
Why do atoms with greater numbers of protons have greater electronegativity?
Ice is _______ dense than water.more less equally as twice as
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Answer: It decreases.
Explanation: Solubility of gas in a particular liquid is the volume of gas in ml that can dissolve in unit volume of the liquid to form the saturated solution at the given temperature and under a pressure of 1 atmosphere.
Effect of temperature on solubility of gas:
Solubility of gas decreases with increase in temperature as on heating some gas is expelled out of the solution.
According to Le Chateliers principle , on increasing the temperature, the reaction will shift in a direction where temperature is decreasing i.e. backward direction and thus the solubility would decrease.
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so rearranged mass = volume x density
mass = 8.920 x 45 = 401.4g
rearrange (there are 1000grams in 1kg)
volume = mass/density
volume = 1000/8.920
volume = 112.1076233cm3
(2) charge and orientation
(3) energy and mass
(4) energy and orientation
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An effective collision between reactant particles requires the particles to have the proper energy and orientation. The particles must have the minimum energy to collide with each other and proper orientation to overlap.
What is collision ?
Collision is a short term force acting between two object when they hit together. According to the kinetic molecular theory of matter, only effective collisions leads to the chemical bonding between atoms.
To make effective collisions, the atoms or constituent particles must acquire a minimum amount of energy to overcome the barrier potential of reaction.
Similarly, the particles must have proper orientation to have overlapping between their valence shell and form chemical bonds. Inappropriate orientation does not leads to the formation of bond between particles. Hence, option 4 is correct.
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They need the energy to be able to break the original bonds, and they need the orientation to be able to bond with the new atoms
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An element's chemical properties are determined by the number ofelectrons .
How do electrons determine chemical properties?
The number of electrons determine chemical properties of an atom as they are present in equal number outside the nucleus as that of protons .Protons contribute to the mass of an atom and give an identity to an atom .
As protons are positively charged there is a need to balance this positive charge and it is balanced by an equal number of electrons .As the valence electrons are the electrons which take part in chemicalreactions the element's chemical properties are determined by the number of electrons.
The number of neutrons has a negligible effect on the chemical nature of elements as they are neutral and have no charge.Indirectly, it's the electronic configuration of an element which determines the chemical properties of any element.
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The number and arrangement of electrons in an atom
The number of valence electrons
The number and arrangement of electrons
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Answer:
To answer, all living organisms contain carbon-based compounds, which classifies them organic.
Simply, carbon dioxide, is an example of an inorganic compound since it does not contain both carbon and hydrogen. Alternatively, one molecule of carbon dioxide contains one atom of carbon and two atoms of oxygen.