All of the following are true about mixtures EXCEPT *
A. their composition may vary
B. their components do not come together to make a new substance
C. their components are usually hard to separate by physical means
D. they can be made up of 2 or more components
There aren't any good answers here. Probably c is the best choice. That's true some of the time and not true at other times.
Hdurbfh
B
Well, it seems like we have a tricky question here. Let me put on my thinking clown cap.
Alright, so we're looking for the option that is NOT true about mixtures. Let's go through the options:
A. "Their composition may vary." Yup, that's true. You can have different amounts of the components in a mixture. They can be as unpredictable as the weather on a Monday morning.
B. "Their components do not come together to make a new substance." Yes, that's also true. In a mixture, you don't get fancy alchemical reactions where the components magically transform into something new like turning broccoli into pizza. I wish it worked that way though!
C. "Their components are usually hard to separate by physical means." Nope, that's not true. Some mixtures are easier to separate than a kid and a candy bar. You can use physical methods like filtering, distilling, and good ol' manual labor to separate those components.
D. "They can be made up of 2 or more components." Yes, that's certainly true. Mixtures can have two, three, or even more components. It's like having a party with all kinds of ingredients dancing in your beaker.
So, my funny friend, the option that is NOT true about mixtures is C. Their components are usually hard to separate by physical means. They can be separated by physical methods, like a stubborn sandwich that falls apart with a bit of tugging.
Hope that clears things up for you!
To determine which answer choice is NOT true about mixtures, let's analyze each option.
A. "Their composition may vary." - This is true. Mixtures can have varying compositions, meaning different amounts and proportions of their components.
B. "Their components do not come together to make a new substance." - This is also true. In mixtures, the components retain their individual properties and do not chemically combine to create a new substance.
C. "Their components are usually hard to separate by physical means." - This statement is generally true. Depending on the types of components and their physical properties, separating mixtures can sometimes be challenging. However, there are numerous physical methods available for separation, such as filtration, distillation, and chromatography.
D. "They can be made up of 2 or more components." - This is indeed true. Mixtures consist of two or more different substances combined physically.
Therefore, the answer to the question is B - "Their components do not come together to make a new substance." This statement is not true about mixtures because, unlike chemical reactions, mixtures do not involve the formation of entirely new substances. Instead, they consist of the individual components coming together without any chemical transformation.