1-What is a physical change? (1 point)
2-A piece of paper is torn into pieces.
Why is this an example of a physical change?
(1 point)
3-Which statement best describes the molecules of a solute that has fully dissolved into a solvent? (1 point)
4-Maria is bored over the weekend and decides to mix salt and sugar together. Is she causing a physical or chemical change? (1 point)
Thanks yep your right!
Yep is right i just took the quick check
The order is different. What are the words?
YEP IS WRONG I GOT A F
1- A physical change refers to a change in the appearance or form of a substance, without changing its chemical composition. It's like getting a new haircut without changing the essence of your personality.
2- Tearing a piece of paper into pieces is an example of a physical change because it only alters the shape and size of the paper. It's like when you decide to give your friend a "pop quiz" but instead of asking questions, you just pop balloons in front of their face.
3- When a solute has fully dissolved into a solvent, the molecules of the solute become evenly distributed throughout the solvent. It's like when you add chocolate syrup to milk and give it a good stir. It blends so well that you can't separate the tasty cocoa particles anymore, just like the friendship between milk and chocolate.
4- Mixing salt and sugar together is causing a physical change because it only involves a rearrangement of the substances. It's like when you play matchmaker and introduce two friends, hoping they'll hit it off. You're not altering their personalities or creating a chemical reaction, just bringing them together in a new way.
1- A physical change is a type of change in which the substance undergoes a transformation that does not alter its chemical composition. In other words, the molecules and atoms of the substance remain the same after the physical change. Examples of physical changes include changes in state (solid, liquid, gas), changes in shape or size, and dissolving in a solvent.
To understand what a physical change is, you can start by looking at the definition. By searching for "What is a physical change?" in a search engine or an educational website, you will find explanations defining physical changes and providing examples. You can also consult textbooks or reference materials related to chemistry or physics to get a more detailed understanding.
2- Tearing a piece of paper into pieces is an example of a physical change because the paper undergoes a transformation in its shape and size, but the substance itself, which is cellulose fibers, remains the same chemically. The molecules and atoms in the paper do not change during this process.
To understand why tearing paper is a physical change, you can break it down step by step. First, understand what tearing means in the context of physical changes. Then, consider the composition of paper and how it behaves when torn. You can search for "Why is tearing paper a physical change?" or similar keywords to find relevant explanations, videos, or articles that provide further insights.
3- The best statement that describes the molecules of a solute that has fully dissolved in a solvent is that the solute molecules are evenly dispersed throughout the solvent. In other words, the solute molecules are uniformly mixed with the solvent on a molecular level, creating a homogeneous solution.
To understand this concept, you can search for "What happens to solute molecules when they fully dissolve?" or similar phrases to find explanations from reputable sources. Chemistry textbooks or educational websites that cover solutions and solubility will also provide detailed explanations.
4- Maria mixing salt and sugar together would cause a physical change. When substances, such as salt and sugar, are mixed, they can physically combine and form a mixture. However, in this case, no chemical reaction occurs between the salt and sugar molecules. The individual properties and compositions of both salt and sugar remain the same.
To understand whether Maria is causing a physical or chemical change, you can search for "Is mixing salt and sugar a physical or chemical change?" to find explanations or articles that discuss the topic. Additionally, referring to educational resources about chemical and physical changes will provide a broader understanding of the topic.
A is B
B is D
C is A
D is C