This is a model of a compound called ethane. Its chemical formula is C2
H6
.
Question
Think about what the letters and numbers in the chemical formula for ethane must mean. Label each item shown in the diagram.
Drag and drop the words into the correct boxes to label the diagram.
(3 points)
Drop target 1
Drop target 2
Drop target 3
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It seems that the drop targets are missing in this question. Can you please provide the diagram so I can help you label it correctly?
In this reaction, the temperature changed from 20oC to 14oC. This means the temperature decreased. This type of reaction is categorized as an endothermic reaction. This type of reaction causes the surrounding to feel cold, which is why it is a good reaction to use when designing a cooling system.
If you have any other questions, please let me know!
a. Think about the models shown above. What colors are used to represent the different elements?
(3 points)
The white spheres represent
hydrogen
atoms. The red spheres represent
atoms. The grey spheres represent
atoms.
Question 2
It seems that the question has been repeated and there is no new model mentioned in the context. Could you please provide more information or clarify the question so that I can assist you better?
Its the same model but it a choice thing
Apologies for the confusion. Based on the given information, the colors used to represent the different elements in the model are as follows:
The white spheres represent hydrogen atoms.
The red spheres represent oxygen atoms.
The grey spheres represent other atoms (which are not specified).
If you have any further questions, feel free to ask!
Oh so it hydrogen oxygen nitrogen and carbon for the ansers btw
Thank you for providing the additional information. If the model includes hydrogen (H), oxygen (O), nitrogen (N), and carbon (C) atoms, then the colors used to represent the different elements would be:
The white spheres represent hydrogen (H) atoms.
The red spheres represent oxygen (O) atoms.
The blue spheres represent nitrogen (N) atoms.
The black or grey spheres represent carbon (C) atoms.
If you have any more questions, feel free to ask!
a. Think about the models shown above. What colors are used to represent the different elements?
(3 points)
The white spheres represent
atoms. The red spheres represent
atoms. The grey spheres represent
atoms.
Since the question does not provide specific information about the colors used to represent the different elements, we cannot accurately determine the colors from the given context. If you could provide more details or a specific model or context, I would be happy to help answer your question.
The methane spear is gray the the oxygen sphere is red and the from dioxide spirit is red gray red
Based on the provided information, it seems that:
- The white spheres represent hydrogen (H) atoms in the methane model.
- The red sphere represents oxygen (O) atom in the oxygen model.
- The gray sphere represents carbon (C) atom in the methane model.
- The red sphere represents oxygen (O) atom in the carbon dioxide model.
- The gray sphere represents carbon (C) atom in the carbon dioxide model.
Therefore, the labeling for the colors used to represent the different elements would be:
The white spheres represent hydrogen (H) atoms.
The red spheres represent oxygen (O) atoms.
The gray spheres represent carbon (C) atoms.
If you have any more questions or need further assistance, feel free to ask!
Consider these entries from the periodic table of elements.
a. What is the chemical symbol for sodium?
(1 point)
Responses
N
N
sodium
sodium
NA
NA
Na
The chemical symbol for sodium is Na.
b. How many protons does one atom of boron have?(1 point)
Responses
5
5
6
6
10
10
10.81
One atom of boron has 5 protons.
c. What is the atomic number of carbon?(1 point)
Responses
6
6
12
12
12.011
The atomic number of carbon is 6.
he boiling point of water is 100o
C. The boiling point of hydrogen peroxide is about 150o
C. Does this make sense? Why or why not.
(1 point)
Responses
Yes, it makes sense, because a physical change took place.
Yes, it makes sense, because a physical change took place.
No, it doesn't make sense, because a physical change took place.
No, it doesn't make sense, because a physical change took place.
No, it doesn't make sense, because we expect products and reactants to have different properties.
No, it doesn't make sense, because we expect products and reactants to have different properties.
Yes, it makes sense, because we expect products and reactants to have different properties.
No, it doesn't make sense, because we expect products and reactants to have different properties.
How would you expect the density of water to compare to the density of hydrogen peroxide?(1 point)
Responses
The density of water would be the same as the density of hydrogen peroxide.
The density of water would be the same as the density of hydrogen peroxide.
The density of water would be different from the density of hydrogen peroxide.
The density of water would be different from the density of hydrogen peroxide.
It is impossible to tell if the densities would be the same or different.
It is impossible to tell if the densities would be the same or different.
The density of water would be different from the density of hydrogen peroxide.
. There are 12 atoms of hydrogen shown on the reactant side. How many total atoms of hydrogen must be on the product side?
(1 point)
Responses
2
2
6
6
12
12
18
To determine the total number of atoms of hydrogen on the product side, we would need to know the specific chemical reaction and the balanced equation. Without this information, we cannot accurately determine the number of hydrogen atoms on the product side.
C6
H12
O6
+ 6O2
→ 6CO2
+ some amount of H2
O
In the given chemical equation:
C6H12O6 + 6O2 → 6CO2 + some amount of H2O
There are 12 atoms of hydrogen (H) on the reactant side (C6H12O6). According to the balanced equation, for every glucose molecule (C6H12O6), there are 6 water molecules (H2O) produced. Therefore, on the product side, there will be a total of 12 atoms of hydrogen (H).
So, the total number of atoms of hydrogen on the product side is 12.
What does the law of conservation of matter (or the law of conservation of mass) tell the students?(1 point)
Responses
Matter is always gained or lost in a chemical or physical process.
Matter is always gained or lost in a chemical or physical process.
Matter might be lost in a chemical or physical process.
Matter might be lost in a chemical or physical process.
Matter might be gained in a chemical or physical process.
Matter might be gained in a chemical or physical process.
Matter is never gained or lost in a chemical or physical process.
The law of conservation of matter (or the law of conservation of mass) tells the students that matter is never gained or lost in a chemical or physical process.
. Aria and Marcus combine 180 grams of sugar with 192 grams of oxygen gas. What would they expect the total mass of the products to be? Why?
You can use the calculator (below the answers) if desired.
(1 point)
Responses
The total mass of the products would be something less than 372 grams, because some of the mass burned into nothing.
The total mass of the products would be something less than 372 grams, because some of the mass burned into nothing.
The total mass of the products would be greater than 372 grams, because water is really heavy.
The total mass of the products would be greater than 372 grams, because water is really heavy.
The total mass of the products would be 372 grams, because mass cannot be gained or lost in the process.
The total mass of the products would be 372 grams, because mass cannot be gained or lost in the process.
The total mass of the products would equal 180 grams, because the mass of oxygen gas doesn't make a difference.
The total mass of the products would equal 180 grams, because the mass of oxygen gas doesn't make a difference.
The total mass of the products would be 372 grams because mass cannot be gained or lost in the process. According to the law of conservation of mass, the total mass of the reactants before the reaction must be equal to the total mass of the products after the reaction. Therefore, the combined mass of the sugar and oxygen gas (180 grams + 192 grams = 372 grams) would be the expected total mass of the products.
If you have any more questions or need further assistance, feel free to ask!
. Click to show which ideas match which articles.
Some ideas might be found in both articles, so you may need to click to show that one or more ideas could be supported by both articles. (In other words, you might click twice on the same row.)
(4 points)
The Wonderful World of Synthetic Chemistry The Dangerous World of Synthetic Chemistry
Synthetic products are made from natural resources.
The Wonderful World of Synthetic Chemistry – Synthetic products are made from natural resources.
The Dangerous World of Synthetic Chemistry – Synthetic products are made from natural resources.
Synthetic products can be useful and can even save lives.
The Wonderful World of Synthetic Chemistry – Synthetic products can be useful and can even save lives.
The Dangerous World of Synthetic Chemistry – Synthetic products can be useful and can even save lives.
Synthetic products can be toxic for people and the planet.
The Wonderful World of Synthetic Chemistry – Synthetic products can be toxic for people and the planet.
The Dangerous World of Synthetic Chemistry – Synthetic products can be toxic for people and the planet.
People should avoid using synthetic products whenever possible.
Deanne and Bo conduct an experiment at school. They put vinegar into a dish, and then they add baking soda to it. Lots of bubbles form as they stir the two substances together. After the bubbling stops, they notice that they no longer smell the distinctive odor of vinegar. Their teacher explains that the atoms making the vinegar and the atoms making the baking soda were recombined to form water, carbon dioxide, and another compound called sodium acetate.(2 points)
a. Deanne and Bo determine that a reaction
did
take place. When a reaction takes place, atoms must
rearrange to form new substance
.
Question 2
b. Which of the following pieces of evidence helped Deanne and Bo answer question a?(2 points)
evidence that was useful to Deanne and Bo evidence that was not observed or was not useful
A solid dissolved in a liquid.
evidence that was useful to Deanne and Bo – A solid dissolved in a liquid.
evidence that was not observed or was not useful – A solid dissolved in a liquid.
A new gas was formed.
evidence that was useful to Deanne and Bo – A new gas was formed.
evidence that was not observed or was not useful – A new gas was formed.
An odor changed.
evidence that was useful to Deanne and Bo – An odor changed.
evidence that was not observed or was not useful – An odor changed.
They saw a new color.
evidence that was useful to Deanne and Bo – They saw a new color.
evidence that was not observed or was not useful – They saw a new color.
C2H6
oxygen, carbon, hydrogen, bond
Apologies for the confusion. Based on the given chemical formula C2H6 for ethane, you can label the diagram as follows:
Drop target 1: Carbon (C)
Drop target 2: Hydrogen (H)
Drop target 3: Bond
The diagram typically represents the structure of ethane, with two carbon atoms (C2) connected by a single bond and six hydrogen atoms (H6) attached to the carbon atoms.
If you have any further questions, feel free to ask.
Study the models shown in the picture. The models were all made using the same model kit. The methane model and the oxygen model are both complete and correct. In the carbon dioxide model, one atom is incorrectly represented with a blue sphere.
a. Think about the models shown above. What colors are used to represent the different elements?
(3 points)
The white spheres represent
atoms. The red spheres represent
atoms. The grey spheres represent
atoms.
Question 2
Keep thinking about the models shown above, and consider which elements are represented by which colors.
b. What color should the blue atom actually be?
(1 point)
Responses
white
white
black
black
red
red
grey
a. Based on the information given, the colors used to represent the different elements are as follows:
The white spheres represent oxygen atoms.
The red spheres represent carbon atoms.
The grey spheres represent hydrogen atoms.
b. The blue atom, which is incorrectly represented, should actually be red.
So, the correct color for the blue atom should be red.
Deanne and Bo conduct an experiment at school. They put vinegar into a dish, and then they add baking soda to it. Lots of bubbles form as they stir the two substances together. After the bubbling stops, they notice that they no longer smell the distinctive odor of vinegar. Their teacher explains that the atoms making the vinegar and the atoms making the baking soda were recombined to form water, carbon dioxide, and another compound called sodium acetate.(2 points)
a. Deanne and Bo determine that a reaction
take place. When a reaction takes place, atoms must
.
Question 2
b. Which of the following pieces of evidence helped Deanne and Bo answer question a?(2 points)
evidence that was useful to Deanne and Bo evidence that was not observed or was not useful
A solid dissolved in a liquid.
evidence that was useful to Deanne and Bo – A solid dissolved in a liquid.
evidence that was not observed or was not useful – A solid dissolved in a liquid.
A new gas was formed.
evidence that was useful to Deanne and Bo – A new gas was formed.
evidence that was not observed or was not useful – A new gas was formed.
An odor changed.
evidence that was useful to Deanne and Bo – An odor changed.
evidence that was not observed or was not useful – An odor changed.
They saw a new color.
evidence that was useful to Deanne and Bo – They saw a new color.
evidence that was not observed or was not useful – They saw a new color.
Skip to navigation
a. Deanne and Bo determine that a reaction did take place. When a reaction takes place, atoms must rearrange.
b. The following piece of evidence helped Deanne and Bo answer question a:
- An odor changed: This evidence was useful to Deanne and Bo, as they noticed that the distinctive odor of vinegar disappeared after the reaction.
Adi and Emeril were discussing articles they had read online. They summarized the articles and then talked about what the articles meant.
Adi read an article entitled, "The Wonderful World of Synthetic Chemistry." Emeril read an article entitled, "The Dangerous World of Synthetic Chemistry."
Read the portions of the articles (below) that Adi and Emeril had read. Then answer the questions.
The Wonderful World of Synthetic Chemistry
Synthetic chemistry involves producing new substances from existing raw materials. Often, the raw materials come from petroleum products like oil and natural gas, which have to be removed from deep underground. Then those molecules are used as starting materials to form new, useful molecules for things like plastics and medicines. Synthetic chemicals can be applied to clothing and household goods to make them resistant to burning. Synthetic clothing can be produced inexpensively and in a wide variety of styles. Plastic containers are lightweight and easy to transport.
The Dangerous World of Synthetic Chemistry
Synthetic materials are produced when raw materials undergo chemical reactions. Synthetic chemistry involves drilling for oil or liquid petroleum to use as raw materials. This process can lead to environmental pollution and risks to human health. Synthetic plastics are "forever" items, meaning it can take them hundreds or even thousands of years to break down in the environment. Recycling programs are not reliable, and single-use synthetic products are wasteful. Some synthetic chemicals are poisonous and can seep into groundwater.
Question 1
Adi and Emeril wanted to categorize their ideas about synthetic chemicals. Help them sort the ideas according to the articles that would support those ideas.
a. Click to show which ideas match which articles.
Some ideas might be found in both articles, so you may need to click to show that one or more ideas could be supported by both articles. (In other words, you might click twice on the same row.)
(4 points)
The Wonderful World of Synthetic Chemistry The Dangerous World of Synthetic Chemistry
Synthetic products are made from natural resources.
The Wonderful World of Synthetic Chemistry – Synthetic products are made from natural resources.
The Dangerous World of Synthetic Chemistry – Synthetic products are made from natural resources.
Synthetic products can be useful and can even save lives.
The Wonderful World of Synthetic Chemistry – Synthetic products can be useful and can even save lives.
The Dangerous World of Synthetic Chemistry – Synthetic products can be useful and can even save lives.
Synthetic products can be toxic for people and the planet.
The Wonderful World of Synthetic Chemistry – Synthetic products can be toxic for people and the planet.
The Dangerous World of Synthetic Chemistry – Synthetic products can be toxic for people and the planet.
People should avoid using synthetic products whenever possible.
The Wonderful World of Synthetic Chemistry – People should avoid using synthetic products whenever possible.
The Dangerous World of Synthetic Chemistry – People should avoid using synthetic products whenever possible.
Question 2
b. How do you expect synthetic materials to compare to the natural resources used to make them?
(1 point)
Responses
The synthetic materials have the same properties as the raw materials because chemical reactions did not take place.
The synthetic materials have the same properties as the raw materials because chemical reactions did not take place.
The synthetic materials have different properties from the raw materials because chemical reactions took place.
The synthetic materials have different properties from the raw materials because chemical reactions took place.
The synthetic materials have different properties from the raw materials because chemical reactions did not take place.
The synthetic materials have different properties from the raw materials because chemical reactions did not take place.
The synthetic materials have the same properties as the raw materials because chemical reactions took place.
The synthetic materials have the same properties as the raw materials because chemical reactions took place.
Question 3
c. Drag and drop each item into the correct column in order to sort the synthetic materials vs. the natural materials.
(2 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
synthetic materials natural materials
( liquid petroleum, plastic bottle, water, nlon shorts, oak tree, sunscreen spray, cotton plant, latex paint)
a. Matching ideas with the articles:
The Wonderful World of Synthetic Chemistry - Synthetic products are made from natural resources.
The Dangerous World of Synthetic Chemistry - Synthetic products can be toxic for people and the planet.
b. How do you expect synthetic materials to compare to the natural resources used to make them?
The synthetic materials have different properties from the raw materials because chemical reactions took place.
c. Sorting synthetic materials vs. natural materials:
Synthetic materials: plastic bottle, nylon shorts, sunscreen spray, latex paint
Natural materials: water, oak tree, cotton plant
Watch the video shown above. (If you are having technical difficulty, don't worry. You can still answer the question without being able to see the video.)
In the video, 1 gram of ammonium chloride is added to 5 mL of water. The following reaction takes place.
NH4
Cl + H2
O → NH4
OH + HCl
starting temperature ending temperature
20o
C 14o
C
Fill in the blanks to complete the following description.
(6 points)
In this reaction, the temperature changed from
to
. This means the temperature
. This type of reaction is categorized as
. This type of reaction causes the surrounding to feel
, which is why it is a good reaction to use when designing a
.