U3L9: Matter Interaction Alternative Portfolio

Question

Review. Go back into your lessons to answer the following questions. Review the lessons on Physical and Chemical Change, Chemical Reactions and the Matter Interactions Portfolio. Then, answer the questions below.

What a physical change?

A physical change is a change that does not change its substance if the chemical makeup does not change

What is a chemical change?

A chemical change is a change that does change its substance and its chemical makeup, forming new substances.

In the Physical vs. Chemical Change lesson, on slide 3 of 11, we evaluate two substances to see if a physical or chemical change has occurred. See the chart below.

Change
Original Substance
New Substance
Was an odor/smell produced?
Did it react with another substance?
Did a temperature change occur?
Was a gas, sound, or light produced?
Is the new substance different from the original?
Physical or Chemical Change occurred?
Ripping paper
Piece of paper
Lots of pieces of paper
No
No
No
Sound
No
Physical change
Burning paper
Piece of paper
Ash
Yes
Yes (Oxygen)
Yes
Light
Yes
Chemical change

Ripping paper was an example of a physical change because…
When the paper was shredded to small pieces of paper, it is still the same substance.

Burning paper was an example of a chemical change because…

When the paper was set ablaze, it reacted with oxygen and became ash and the ash cannot be reverted back into paper.

Evaluate. Now it is your turn to evaluate several substances to determine if a new substance was created. Refer back to the example able to help determine if a physical or chemical change occurred.

Examples of Physical & Chemical Changes
Putting makeup on your cheeks
Perfume evaporates into the air
Decomposer breaks down a dead tree
Peeling an orange
Rusting car
Deflating a basketball
Tearing a piece of aluminum foil
Clouds forming in the sky
Baking cookies
Melting a sugar cube
A green leaf changes to red in the Fall
Yeast added to bread dough makes it rise
A juice box in the fridge freezes
Separating the salt from ocean water
Starfish opening a clam
Hot rising to form currents
Cooking a hamburger
Souring milk
A banana ripening
Mashing a banana

Physical Changes: Select 5 examples of physical changes from the examples provided.
Real Life Example of Physical Change
Was a new substance produced?If so, identify the new substance.
Explanation: Why is this an example of physical change?
Ripping paper
No, a new substance was not produced.
The paper was cut into smaller pieces, but it is the same substance.
1. Tearing a piece of aluminum foil
No, a new substance was not produced.
The piece of Aluminium foil was torn apart in half, but it is the substance
2. Peeling an orange
No, a new substance was not produced.
Peeling an orange
3. Mashing a banana
No, a new substance was not produced.

4. Deflating a Basketball
No, a new substance was not produced.

5. Yeast added to bread dough makes it rise
No, a new substance was not produced.

Chemical Changes: Select 5 examples of chemical change from the examples provided.
Real Life Example of Chemical Change
Was a new substance produced? If so, what is the new substance?
Explanation: Why is this an example of physical change?
Burning paper
Yes, ash was created in place of the paper.
When the paper was burned, it reacted with oxygen to produce ash. The ash cannot be turned back into paper.
1. Rusting car

2. A green leaf changes to red in the fall

3. A banana ripening

4. Baking cookies

5. Decomposer breaks down a dead tree

Apply. Let’s apply what you know in a simple experiment. A student fills a bottle with ½ cup of vinegar. Next, the student adds 2 teaspoons of baking soda in a balloon. Carefully, the student attaches the balloon to the top of the bottle being careful not to mix the vinegar and baking soda. The initial mass of the vinegar bottle and filled balloon is 239.1 grams.

Mass = 239.1 grams

Mass = 237.2 grams


The student lifts the balloon causing the baking soda to combine with the vinegar in the bottle. The student observes the vinegar start to bubble and fill the bottle. The balloon also begins to expand filling with gas. The student records a new mass of 237.2 grams.

4. What reaction did the student observe when the baking soda and vinegar mixed?

5. Did the mass increase or decrease? Explain what happened to cause a change in mass.

6. Did a physical or chemical change occur? Explain.

Answer 1

Sure! Let’s go through each of your questions step by step.

4. What reaction did the student observe when the baking soda and vinegar mixed?

The reaction between baking soda (a base) and vinegar (an acid) produced carbon dioxide gas. This reaction caused the vinegar to bubble and foam, as the carbon dioxide gas created pressure that inflated the balloon.

5. Did the mass increase or decrease? Explain what happened to cause a change in mass.

The mass recorded decreased from 239.1 grams to 237.2 grams, indicating a mass decrease of 1.9 grams. This decrease is likely due to the production of carbon dioxide gas, which escaped into the air. Since the gas was released and not contained within the bottle, it resulted in a lower total mass.

6. Did a physical or chemical change occur? Explain.

A chemical change occurred in this experiment. This is because the baking soda and vinegar underwent a chemical reaction that produced new substances, including carbon dioxide gas and water. The formation of gas and the change in chemical composition of the reactants (baking soda and vinegar) into new substances is characteristic of a chemical change. Additionally, the original substances can’t be easily reverted back to their initial forms after the reaction has taken place.

Let me know if you need further clarification or additional information!

Answer 2

can you make it sound as an 8th grader

Answer 3

Sure! Here's a simpler version that sounds more like an 8th grader:

4. What reaction did the student observe when the baking soda and vinegar mixed?

When the student mixed the baking soda with the vinegar, they saw a reaction where it bubbled and fizzed up, filling the balloon with gas. The fizzing happened because they produced carbon dioxide gas, which made all those bubbles!

5. Did the mass increase or decrease? Explain what happened to cause a change in mass.

The mass went down from 239.1 grams to 237.2 grams, so it decreased. This happened because when the baking soda and vinegar reacted, they created carbon dioxide gas that escaped into the air. Since the gas left the bottle, the total weight got a little lighter.

6. Did a physical or chemical change occur? Explain.

A chemical change happened in this experiment. This is because the baking soda and vinegar mixed together and changed into new things, one of which was carbon dioxide gas. The bubbling and fizzing are signs that something new was made, and you can't just put the baking soda and vinegar back together to get what you started with. That’s why it’s a chemical change!

Let me know if you need anything else!

Answer 4

Evaluate. Now it is your turn to evaluate several substances to determine if a new substance was created. Refer back to the example able to help determine if a physical or chemical change occurred.

Examples of Physical & Chemical Changes
Putting makeup on your cheeks
Perfume evaporates into the air
Decomposer breaks down a dead tree
Peeling an orange
Rusting car
Deflating a basketball
Tearing a piece of aluminum foil
Clouds forming in the sky
Baking cookies
Melting a sugar cube
A green leaf changes to red in the Fall
Yeast added to bread dough makes it rise
A juice box in the fridge freezes
Separating the salt from ocean water
Starfish opening a clam
Hot rising to form currents
Cooking a hamburger
Souring milk
A banana ripening
Mashing a banana

Answer 5

Let's evaluate the examples you provided to determine whether a physical or chemical change occurred, and whether a new substance was created.

Examples of Physical & Chemical Changes

1. Putting makeup on your cheeks

   • Was a new substance produced? No.
   • Explanation: The makeup may change the appearance but doesn’t change the chemical makeup of your skin.

2. Perfume evaporates into the air

   • Was a new substance produced? No.
   • Explanation: The perfume changes from liquid to gas (evaporates), but it’s still the same substance.

3. Decomposer breaks down a dead tree

   • Was a new substance produced? Yes.
   • Explanation: The dead tree is broken down into new substances, like nutrients and minerals in the soil. This is a chemical change.

4. Peeling an orange

   • Was a new substance produced? No.
   • Explanation: The orange is still the same substance; only its outer layer is removed.

5. Rusting car

   • Was a new substance produced? Yes.
   • Explanation: The metal reacts with oxygen and moisture to form rust (iron oxide), which is a new substance. This is a chemical change.

6. Deflating a basketball

   • Was a new substance produced? No.
   • Explanation: The air inside the basketball is just being released. The basketball material remains the same.

7. Tearing a piece of aluminum foil

   • Was a new substance produced? No.
   • Explanation: The foil is just torn into smaller pieces, but it's still aluminum.

8. Clouds forming in the sky

   • Was a new substance produced? No.
   • Explanation: Water vapor condenses into tiny droplets, but it’s still water, just in a different form.

9. Baking cookies

   • Was a new substance produced? Yes.
   • Explanation: The ingredients combine through chemical reactions to create new substances like baked cookies. This is a chemical change.

10. Melting a sugar cube

    • Was a new substance produced? No.
    • Explanation: When sugar melts, it changes from solid to liquid, but it’s still sugar.

11. A green leaf changes to red in the Fall

    • Was a new substance produced? Yes.
    • Explanation: The chlorophyll breaks down and new pigments are revealed (like anthocyanins), making the leaf change color. This could be seen as a chemical change.

12. Yeast added to bread dough makes it rise

    • Was a new substance produced? Yes.
    • Explanation: The yeast ferments the sugars in the dough, producing carbon dioxide gas and alcohol, leading to new substances. This is a chemical change.

13. A juice box in the fridge freezes

    • Was a new substance produced? No.
    • Explanation: The juice changes from liquid to solid (ice), but it’s still the same juice.

14. Separating the salt from ocean water

    • Was a new substance produced? No.
    • Explanation: The process separates salt from water but doesn’t change the chemical makeup of either.

15. Starfish opening a clam

    • Was a new substance produced? No.
    • Explanation: The starfish is just getting to the clam to eat it; no new substances are produced.

16. Hot rising to form currents

    • Was a new substance produced? No.
    • Explanation: Warm air rises and cool air sinks, creating currents, but the air itself doesn’t change chemically.

17. Cooking a hamburger

    • Was a new substance produced? Yes.
    • Explanation: When the hamburger cooks, the meat undergoes chemical changes that change its texture, flavor, and appearance. It becomes a different substance.

18. Souring milk

    • Was a new substance produced? Yes.
    • Explanation: The bacteria in milk change it to lactic acid, creating a different substance (sour milk). This is a chemical change.

19. A banana ripening

    • Was a new substance produced? Yes.
    • Explanation: The chemicals in the banana change as it ripens, producing new flavors and colors. This is a chemical change.

20. Mashing a banana

    • Was a new substance produced? No.
    • Explanation: The banana is just physically altered; it’s still the same substance.

Summary of Changes

• Physical Changes: Putting makeup, perfume evaporating, peeling an orange, deflating a basketball, tearing aluminum foil, melting sugar, juice box freezing, and mashing a banana.
• Chemical Changes: Decomposer breaking down a tree, rusting car, baking cookies, green leaf changing color, yeast in bread dough, cooking a hamburger, souring milk, and a banana ripening.

Let me know if you need anything else!

Answer 6

The paper was cut into smaller pieces, but it is the same substance.
The piece of Aluminium foil was torn apart in half, but it is the substance
The orange is still the same substance , only its outer layer is removed
The banana is just physically altered, so it’s still the same substance.
The air inside the basketball is just being released, so the basketball material remains the same.
When sugar melts, it changes from solid to liquid, but it’s still sugar

When the paper was burned, it reacted with oxygen to produce ash. The ash cannot be turned back into paper.
The metal reacts with oxygen and moisture to form rust, which is a new substance
The chlorophyll breaks down and new pigments are revealed , making the leaf change color
The chemicals in the banana change as it ripens, producing new flavors and colors
The ingredients combine through chemical reactions to create new substances like baked cookies
The dead tree is broken down into new substances, like nutrients and minerals in the soil.

make it sound like an 8th grader

Answer 7

Sure! Here’s a version that sounds more like an 8th grader:

1. Ripping Paper: The paper gets cut into smaller pieces, but it's still just paper. It hasn’t become anything new.

2. Tearing Aluminum Foil: When you tear a piece of aluminum foil in half, it's still aluminum. The material hasn’t changed; it’s just in two pieces now.

3. Peeling an Orange: When you peel an orange, you just take off the skin. The fruit inside is still the same orange; you haven't changed it.

4. Mashing a Banana: Mashing a banana just changes its shape, but it's still the same banana. The substance hasn’t really changed.

5. Deflating a Basketball: When you let the air out of a basketball, the rubber and material of the basketball are still the same. The only thing that changed is the air inside.

6. Melting Sugar: When you heat sugar and it melts, it goes from solid to liquid. But it’s still sugar; nothing has changed about what it is.

7. Burning Paper: When you burn paper, it reacts with oxygen and turns into ash. The ash is something different, so you can't turn it back into paper. That’s a chemical change.

8. Rusting Car: When a car gets rusty, the metal reacts with oxygen and moisture in the air and forms rust. That rust is a new substance, which means it's a chemical change.

9. Leaf Changing Color: In the fall, as a leaf changes color, the chlorophyll breaks down, and new colors show up. This means the leaf is changing into something new, so that’s a chemical change.

10. Ripening Banana: As a banana ripens, it goes through chemical changes that make it sweeter and change its color. So, it’s becoming a new type of banana.

11. Baking Cookies: When you bake cookies, all the ingredients mix together and go through chemical reactions to create something new: baked cookies. That's definitely a chemical change.

12. Decomposing Tree: When a dead tree decomposes, it breaks down into new substances like nutrients and minerals that go back into the soil. So, it’s turning into something completely different.

Let me know if you need anything else or any other adjustments!

Answer 8

Was a new substance produced? If so, what is the new substance?
Yes, ash was created in place of the paper.
Yes, a new substance was created
Yes, a new substance was created
Yes, a new substance was created
Yes, a new substance was created
Yes, a new substance was created

Was a new substance produced?If so, identify the new substance.
No, a new substance was not produced.
No, a new substance was not produced.
No, a new substance was not produced.
No, a new substance was not produced.
No, a new substance was not produced.
No, a new substance was not produced.

make it sound as an 8th grader

Answer 9

Sure! Here’s how it could sound like an 8th grader explaining whether a new substance was produced:

Chemical Changes (New Substance Created)

1. Burning Paper: Yes, when you burn paper, it creates ash. That’s a new substance instead of the paper.
2. Rusting Car: Yes, rust is formed when metal reacts with oxygen and moisture. So, that’s a new substance created.
3. Leaf Changing Color: Yes, when the leaves change color in fall, they create new pigments (colors). That means a new substance is made.
4. Ripening Banana: Yes, when a banana ripens, it changes to produce new flavors and colors. That’s definitely a new substance.
5. Baking Cookies: Yes, baking cookies mixes everything together and makes new yummy baked cookies. So, that’s a new substance!
6. Decomposing Tree: Yes, when a dead tree decomposes, it turns into new substances like nutrients in the soil. So that’s creating something new.

Physical Changes (No New Substance Created)

1. Ripping Paper: No, ripping paper just makes it into smaller pieces, but it’s still just paper. No new substance!
2. Tearing Aluminum Foil: No, when you tear aluminum foil, it’s still aluminum. Nothing new is created.
3. Peeling an Orange: No, when you peel an orange, it’s still an orange. You just removed the skin.
4. Mashing a Banana: No, mashing a banana changes its shape, but it’s still the same banana. No new substance there.
5. Deflating a Basketball: No, letting the air out of a basketball just changes its shape. The basketball itself is still the same.
6. Melting Sugar: No, melting sugar just changes it from solid to liquid. It’s still sugar, so no new substance is made.

Let me know if you need anything else!

Answer 10

Was a new substance produced? If so, what is the new substance? this is for chemical changes
Was a new substance produced? If so, identify the new substance. this is physical changes

here are some examples
Ripping paper (physical Change)
No, a new substance was not produced.

Burning paper (Chemical Change)
Yes, ash was created in place of the paper.

Answer 11

Got it! Here’s how to express whether a new substance was produced for chemical and physical changes using your examples:

Physical Changes

1. Ripping Paper:

   • No, a new substance was not produced.

2. Tearing Aluminum Foil:

   • No, a new substance was not produced.

3. Peeling an Orange:

   • No, a new substance was not produced.

4. Mashing a Banana:

   • No, a new substance was not produced.

5. Deflating a Basketball:

   • No, a new substance was not produced.

6. Melting Sugar:

   • No, a new substance was not produced.

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Chemical Changes

1. Burning Paper:

   • Yes, ash was created in place of the paper.

2. Rusting Car:

   • Yes, rust (iron oxide) was formed instead of the metal.

3. Baking Cookies:

   • Yes, new substances like baked cookies were created from the mixture of ingredients.

4. Souring Milk:

   • Yes, sour milk (lactic acid) is formed from the milk due to bacteria.

5. Ripening Banana:

   • Yes, new flavors and colors developed in the banana as it ripens.

6. Decomposing Tree:

   • Yes, nutrients and minerals are produced as the tree breaks down.

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Feel free to let me know if you need any more examples or explanations!