Your Qna     New Questions     About Qna
EQNA is a growing interactive people-knowledge network with more than 120,000 questions and 450,000 answers from over 55,000 members worldwide. With all friendly functions, EQNA will be a fun place to join, share and discover knowledge, an open net space allowing you to connect with other people having specialized knowledge or ones with same interests to yours. EQNA login features secured logins using Twitter and Facebook enable you to place questions without sharing your personal information to us. Lets get out and join our community today!
Ask a Question
Lights

Is concrete a pure substance, homogeneous mixture, or heterogeneous mixture?

This is for my CP Chemistry homework. I would use my book but my teacher used a worksheet that it from a different text book then the one we use and so it is harder to answer the worksheet's questions. I have already looked for the answer. I'm thinking homogeneous mixture.
Lights:

I have found out it is a heterogeneous mixture.

Whipsaw:

Concrete is a mixture of cement, water, chemicals, sand and often gravel.
Homogeneous mixtures are mixtures of materials that are alike in size and form.
Heterogeneous mixtures are mixtures of materials that are different in sizes or forms.
You decide.

Moniker:

I never did like chemistry much. But my curiosity led me to Wikipedia. Which only confused me more. Maybe you can make heads or tails of what it says there.......
In physical chemistry, homogeneous describes a single-phase system as opposed to a Heterogeneous system. Homogenization is intensive mixing of mutually insoluble phases (sometimes with addition of surfactants) to obtain a soluble suspension or emulsion, for example homogenizing milk so that the cream doesn't separate out.
Heterogeneous mixtures are mixtures with non-uniform composition. The parts of a heterogeneous composition can be mechanically separated from each other. Examples include salad, trail mix, sand, salt mixed with sand, and soil.

Moniker:

okay now i'm thinking Heterogenous...
Main Entry: heterogeneous mixture
Part of Speech: n
Definition: any combination of substances that does not have uniform composition and properties; a mixture of physically distinct substances with different properties

John:

Homogeneous is right.

John:

I ask my husband He is a civil Engineer.

Lights:

Well, my teacher told us it is a heterogeneous mixture.

Answer:
Text ColorBackground Color
BoldItalicUnderline
LeftCenterRightJustify
Ordered ListBulleted List
IndentOutdent
Horizontal Rule
SubscriptSuperscript
HyperlinkImage
Design ModeDesign
Html ModeHtml
 

Top Question And Answer

  • Why don't spun concrete poles crack?
  • small commercial concrete company looking for work in MD, D.C, VA where can i find some online
  • I thought there was a curbscapes company in Louisiana. They do concrete edgeing
  • Percentage increased cost of (1) concrete and (2)asphalt since 2002?
  • Are there any articles on a white powdery substance on shipments from Chinese ports?
  • Does this question have any substance?
  • Is it a pure substance or a mixture?
  • calculate the molar mass of a gaseious substance if 0.125 g of the gas occupies 93.3 mL at STP.
  • Is dirt a heterogeneous mixture or a homogeneous mixture?
  • Is sea water a homogeneous mixture, heterogeneous mixture, or a compound?
  • Is paint a pure substance, homogeneous mixture, or heterogeneous mixture?
  • Is vegetable oil a pure substance, homogeneous mixture, or heterogeneous mixture?
  • what is the easiest way to adj the airfuel mixture on a twin carb mtrcycl w/o a synconizer
  • How do you lean out the air/fuel mixture on an 86 3.8L Mustang
  • how would you separate components of a mixture of ethanol, water, strontium chloride?
  • is a solution a compound or a mixture? if it is a mixture, is it then a homogeneous...
  • Why is it necessary to stir the mixture as the acid is being added?
  • Why is it necessary to stir the mixture as the acid is being added?
  • Give the difference between pure substance and mixture. TNX
  • What are the 3 types of Mixture?
  • Forget about Recession, is USA heading towards a depression? Thoughts?
  • Bush says our economy is "strong" to withstand current crisis? Agree or disagree? Thoughts?
  • Are democrats a bunch of sissies??
  • Do you think the congress allowed the economy to get worse so A Democrat could win the white house?
  • What were the advantages and inconvenients of Taylorism? Fordism?
  • How does fast food contribute to economy's growth of a country?
  • QnAers => I need your opinion on anarcho-communism & capitalism!
  • Breaking News: Yahoo! to reject Microsoft bid.
  • If most Insurance Companies own the Banks, Why are Banks buying Insurance Companies?
  • Under George's watch, is your economy falling down around you?
  • How long has it been since our economy was normal?
  • What do you think about a new AMERICAN IDOL style campaign?
  • What's likely impact of the latest credit crunch related developments on emerging markets like Afric
  • If we went to the barter system, what would you have to offer?
  • How can you compromise when you want to cut back on certain expenses and the other person doesn't