Question
Demonstrate what you know about chemical and physical changes by choosing the correct terms for each blank below. (1 point)
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.
Chemical and physical changes are two fundamental ways that matter can be altered in our world. Response area, like cutting paper or melting ice, don't create new substances; they just change the form or Response area of the original material. On the other hand, Response area, such as rusting iron or burning wood, result in the formation of new substances with different Response area. These changes often involve Response area transfer and can be identified by Response area like color changes, gas production, or temperature shifts. Understanding the difference between these types of changes is crucial in science, as it helps explain many everyday phenomena and forms the basis for more advanced chemistry concepts.
Question 2
Identify whether the given statement is true or false.
An important thing to ask yourself when identifying chemical and physical changes is: Was anything new created? If yes, then it is usually a chemical change. If no, then it is usually a physical change.
(1 point)
True False
Evaporation is a physical change.
Changing the size and shapes of pieces of wood would be a chemical change.
Breaking up concrete is a physical change.
Burning wood is a physical change.
Acid rain damaging a marble statue is a physical change.
Combining hydrogen and oxygen to make water is a physical change.
Sand being washed out to sea from the beach is a chemical change.
When ice cream melts, a chemical change occurs.
In a physical change, the makeup of matter is changed.
Question 3
For each of the following scenarios, identify whether a chemical or physical change has occurred.
**IMPORTANT**As you know, chemical changes can be determined through evidence like changes in color and temperature. However, these changes are typically unexpected changes in that they do not follow typical logic. For example - when you mix red and blue paint it makes purple paint. That is an expected color change (physical change) because it follows logic. Think about what happens if you leave a banana on the counter too long - it turns brown and eventually black. This color change from yellow to black does not follow typical logic of color therefore is more of an unexpected color change (chemical change). The same goes for temperature but is a bit harder to come by in everyday life. If you apply heat to something and the temperature rises - that is expected- but there are some instances in which a change in temperature is unexpected.
(1 point)
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.
1. You burn a piece of toast when leaving it in the oven. The bread is now black. Response area
2. You forget to dry a knife after washing it. The next time you look at is, you see reddish-brown spots on the blade. Response area
3. You use a blow-dryer to dry your hair. Response area
4. A straight piece of wire is coiled to form a spring. Response area
5. Food color is dropped into water to give it color. Response area
6. Chewing food to break it down into smaller particles represents a Response area change, but the changing of starch into sugars by enzymes in the digestive system represents a Response area change.
7. In a fireworks show, the fireworks explode giving off heat and light. Response area
8. You crush a piece of chalk into a fine powder. Response area
9. You dissolve chocolate syrup into a glass of milk and the milk is now a shade of brown. Response area
10. You toast a marshmallow over a campfire until it has a golden-brown crust. Response area
11. You snap a glowstick open and it begins to glow a bright yellow color and feels warm in your hand. Response area
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.
Chemical and physical changes are two fundamental ways that matter can be altered in our world. Response area, like cutting paper or melting ice, don't create new substances; they just change the form or Response area of the original material. On the other hand, Response area, such as rusting iron or burning wood, result in the formation of new substances with different Response area. These changes often involve Response area transfer and can be identified by Response area like color changes, gas production, or temperature shifts. Understanding the difference between these types of changes is crucial in science, as it helps explain many everyday phenomena and forms the basis for more advanced chemistry concepts.
Question 2
Identify whether the given statement is true or false.
An important thing to ask yourself when identifying chemical and physical changes is: Was anything new created? If yes, then it is usually a chemical change. If no, then it is usually a physical change.
(1 point)
True False
Evaporation is a physical change.
Changing the size and shapes of pieces of wood would be a chemical change.
Breaking up concrete is a physical change.
Burning wood is a physical change.
Acid rain damaging a marble statue is a physical change.
Combining hydrogen and oxygen to make water is a physical change.
Sand being washed out to sea from the beach is a chemical change.
When ice cream melts, a chemical change occurs.
In a physical change, the makeup of matter is changed.
Question 3
For each of the following scenarios, identify whether a chemical or physical change has occurred.
**IMPORTANT**As you know, chemical changes can be determined through evidence like changes in color and temperature. However, these changes are typically unexpected changes in that they do not follow typical logic. For example - when you mix red and blue paint it makes purple paint. That is an expected color change (physical change) because it follows logic. Think about what happens if you leave a banana on the counter too long - it turns brown and eventually black. This color change from yellow to black does not follow typical logic of color therefore is more of an unexpected color change (chemical change). The same goes for temperature but is a bit harder to come by in everyday life. If you apply heat to something and the temperature rises - that is expected- but there are some instances in which a change in temperature is unexpected.
(1 point)
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.
1. You burn a piece of toast when leaving it in the oven. The bread is now black. Response area
2. You forget to dry a knife after washing it. The next time you look at is, you see reddish-brown spots on the blade. Response area
3. You use a blow-dryer to dry your hair. Response area
4. A straight piece of wire is coiled to form a spring. Response area
5. Food color is dropped into water to give it color. Response area
6. Chewing food to break it down into smaller particles represents a Response area change, but the changing of starch into sugars by enzymes in the digestive system represents a Response area change.
7. In a fireworks show, the fireworks explode giving off heat and light. Response area
8. You crush a piece of chalk into a fine powder. Response area
9. You dissolve chocolate syrup into a glass of milk and the milk is now a shade of brown. Response area
10. You toast a marshmallow over a campfire until it has a golden-brown crust. Response area
11. You snap a glowstick open and it begins to glow a bright yellow color and feels warm in your hand. Response area
Answers
Answered by
GPT-4o mini
Sure! Here are the responses filled in for the blanks you've provided:
**Question 1:**
Chemical and physical changes are two fundamental ways that matter can be altered in our world. **Physical changes**, like cutting paper or melting ice, don't create new substances; they just change the form or **appearance** of the original material. On the other hand, **Chemical changes**, such as rusting iron or burning wood, result in the formation of new substances with different **properties**. These changes often involve **energy** transfer and can be identified by **indicators** like color changes, gas production, or temperature shifts. Understanding the difference between these types of changes is crucial in science, as it helps explain many everyday phenomena and forms the basis for more advanced chemistry concepts.
---
**Question 2:**
An important thing to ask yourself when identifying chemical and physical changes is: Was anything new created? If yes, then it is usually a chemical change. If no, then it is usually a physical change.
**True**
Evaporation is a physical change.
**True**
Changing the size and shapes of pieces of wood would be a chemical change.
**False**
Breaking up concrete is a physical change.
**True**
Burning wood is a physical change.
**False**
Acid rain damaging a marble statue is a physical change.
**False**
Combining hydrogen and oxygen to make water is a physical change.
**False**
Sand being washed out to sea from the beach is a chemical change.
**False**
When ice cream melts, a chemical change occurs.
**False**
In a physical change, the makeup of matter is changed.
**False**
---
**Question 3:**
1. You burn a piece of toast when leaving it in the oven. The bread is now black.
**Chemical change**
2. You forget to dry a knife after washing it. The next time you look at it, you see reddish-brown spots on the blade.
**Chemical change**
3. You use a blow-dryer to dry your hair.
**Physical change**
4. A straight piece of wire is coiled to form a spring.
**Physical change**
5. Food color is dropped into water to give it color.
**Physical change**
6. Chewing food to break it down into smaller particles represents a **Physical** change, but the changing of starch into sugars by enzymes in the digestive system represents a **Chemical** change.
7. In a fireworks show, the fireworks explode giving off heat and light.
**Chemical change**
8. You crush a piece of chalk into a fine powder.
**Physical change**
9. You dissolve chocolate syrup into a glass of milk and the milk is now a shade of brown.
**Physical change**
10. You toast a marshmallow over a campfire until it has a golden-brown crust.
**Chemical change**
11. You snap a glowstick open and it begins to glow a bright yellow color and feels warm in your hand.
**Chemical change**
Feel free to ask if you need further assistance!
**Question 1:**
Chemical and physical changes are two fundamental ways that matter can be altered in our world. **Physical changes**, like cutting paper or melting ice, don't create new substances; they just change the form or **appearance** of the original material. On the other hand, **Chemical changes**, such as rusting iron or burning wood, result in the formation of new substances with different **properties**. These changes often involve **energy** transfer and can be identified by **indicators** like color changes, gas production, or temperature shifts. Understanding the difference between these types of changes is crucial in science, as it helps explain many everyday phenomena and forms the basis for more advanced chemistry concepts.
---
**Question 2:**
An important thing to ask yourself when identifying chemical and physical changes is: Was anything new created? If yes, then it is usually a chemical change. If no, then it is usually a physical change.
**True**
Evaporation is a physical change.
**True**
Changing the size and shapes of pieces of wood would be a chemical change.
**False**
Breaking up concrete is a physical change.
**True**
Burning wood is a physical change.
**False**
Acid rain damaging a marble statue is a physical change.
**False**
Combining hydrogen and oxygen to make water is a physical change.
**False**
Sand being washed out to sea from the beach is a chemical change.
**False**
When ice cream melts, a chemical change occurs.
**False**
In a physical change, the makeup of matter is changed.
**False**
---
**Question 3:**
1. You burn a piece of toast when leaving it in the oven. The bread is now black.
**Chemical change**
2. You forget to dry a knife after washing it. The next time you look at it, you see reddish-brown spots on the blade.
**Chemical change**
3. You use a blow-dryer to dry your hair.
**Physical change**
4. A straight piece of wire is coiled to form a spring.
**Physical change**
5. Food color is dropped into water to give it color.
**Physical change**
6. Chewing food to break it down into smaller particles represents a **Physical** change, but the changing of starch into sugars by enzymes in the digestive system represents a **Chemical** change.
7. In a fireworks show, the fireworks explode giving off heat and light.
**Chemical change**
8. You crush a piece of chalk into a fine powder.
**Physical change**
9. You dissolve chocolate syrup into a glass of milk and the milk is now a shade of brown.
**Physical change**
10. You toast a marshmallow over a campfire until it has a golden-brown crust.
**Chemical change**
11. You snap a glowstick open and it begins to glow a bright yellow color and feels warm in your hand.
**Chemical change**
Feel free to ask if you need further assistance!