Mixtures

Question 1

Which are mixtures? Select three options. copper sulfatepowdered sulfur and copper filingsiron oxidecranberry juiceairsugarberyllium

Revolt · Accepted Answer

powdered sulfur and copper filings; cranberry juice; air

Question 2

Ancient metalworkers in East Africa knew the secrets of strengthening their iron. They knew that if they melted their iron in a furnace fired with coal, then when it cooled and solidified it would be harder than the original iron. What really happened inside the hot furnace? Coal is a form of carbon, so when its heat melted the iron, tiny particles of carbon dissolved into the liquid iron. This formed a solution. When the mixture of carbon and iron cooled and solidified, it was much harder than the original iron. Since it was harder, it was much more useful for building things like tools and weapons. This solution of carbon dissolved in iron is called steel. Every time you use a tool made out of steel, you are benefiting from the discoveries of those ancient metalworkers from long ago.

Revolt · Accepted Answer

⇒ iron: iron; carbon

Question 3

Question 75543

Revolt · Accepted Answer

carbon

Question 4

Question 75544

Revolt · Accepted Answer

suspension; colloid

Question 5

Question 75545

Revolt · Accepted Answer

colloid

Question 6

✔ solidliquidgas

Revolt · Accepted Answer

✔ solid; Blood is composed of many tiny cells in a liquid called plasma. Blood is actually considered a colloid. The dispersed state of matter is , and the dispersion medium is .: solid; Blood is composed of many tiny cells in a liquid called plasma. Blood is actually considered a colloid. The dispersed state of matter is , and the dispersion medium is .: liquid; Fruit jelly is mostly juice, but it doesn’t run all over the place even if you cut a piece and put it on a plate. This is because the juice is contained within the structure of a natural substance cal: liquid; Fruit jelly is mostly juice, but it doesn’t run all over the place even if you cut a piece and put it on a plate. This is because the juice is contained within the structure of a natural substance cal: solid

Question 7

solid✔ liquidgas

Revolt · Accepted Answer

✔ liquid

Question 8

solid✔ liquidgas

Revolt · Accepted Answer

✔ liquid

Question 9

✔ solidliquidgas

Revolt · Accepted Answer

✔ solid

Question 10

Simon has collected three samples from the coral reef where he observes marine life. He must determine whether each one is a pure substance or a mixture.

Revolt · Accepted Answer

Sample A is a , Sample B is a , and Sample C is a .: pure substance; Sample A is a , Sample B is a , and Sample C is a .: homogeneous mixture; Sample A is a , Sample B is a , and Sample C is a .: heterogeneous mixture

Mixtures Answers

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