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Question:okay so could you tell me whether the following are compounds or mixtures:
if you cannot answer all that is okay could you please just answers as much as possible!
that would be greatly appreciated
and if you want to answer this part...
could please say whether it is a compound or element if it is a pure substance and if it is a mixture can you say whether it is a mixture or solution! please!!
sugar is a pure substance and is a compound
scrambled eggs is a mixture so it is a mixture
also is rubbing alcohol a mixture or pure substance?
oh and just to help you some more...
Mixture-Composed of 2 or more pure substances
Solution-a homogeneous mixture of substances in which no setting occurs when it is left alone
Pure Substances-Composed of only one ttype of particle-can exist in all 3 states
Elements-Smallest building block of matter
eg. oxygen, Hydrogen, gold
Compounds-Are composed of 2 or more elements
e.g water, sugar
i hope this helps with your answers!
and i need this for today so if anyone can please help even answer 1 or 2 that would be amazing!!!!
Answers:Food colouring - mixture (dyes dissolved in water or alcohol)
Mouthwash - mixture (antiseptic dissolved in water and alcohol)
Quartz - compound (silicon dioxide)
Sulfur - element
Cement - mixture (hydrated calcium alumio-silicates mixed with other materials)
Ginger ale - mixture (carbon dioxide, sugar and flavoring dissolved in water)
Sulfuric acid - compound (diHydrogen sulfate)
Iron - element
Liquid oxygen - element
Carbon dioxide - compound
Crude oil - mixture (various hydrocarbons)
Glucose - compound (a carbohydrate)
Question:There was a little bit of a fight between my teacher and me today, over whether an apple would be a pure substance.
He doesn't follow the textbook, but we all have one to read out of, and I read that;
Water is a pure substance,
salt is a pure substance,
apples are a pure substance
BUT, water isn't a pure substance! Its made of Hydrogen and Oxygen; 2 different aliments.
An apple is made of things like glucose, etc.
Salt is made of sodium, and chloride
So, not one of those examples are a pure substance, ( I think... )
Answers:You are incorrect and your teacher is correct. A pure substance is "any material with a definite chemical composition." "A pure substance can either be a pure chemical element or a pure chemical compound." Study up.
Question:And an explanation of the terms would be fantastic - I've gotten difference definitions at every website.
Thanks in advance! Oh, and the hydrate I'm working with in a lab is Magnesium Sulfate Heptahydrate (MgSO4*7H2O) if that makes any difference.
Answers:Ignore Aurelius - he hasn't bothered to find out what a hydrate is!
The water is not chemically bonded to the magnesium sulphate - no covalent or ionic bonds have to be broken to separate it, but the water is coordinated with the compound, so a hydrate is an example that is half way between a pure compound and a mixture - that's why there are differences in the websites you have searched.
Question:I need help in my homework!!! Classifications for each of these please!!!
2.Block of Iron
3.Glass of Cola
4.Mercury in a thermometer
6.Vinegar and Oil
8.Earth's atmosphere, when dusty
9.Earth's atmosphere, when dust-free
17.Neon gas in neon sign
THANKS SO MUCHHHH! 9th Grade .....
Answers:1. compound (NaCl), pure substance
2. element, pure substance
3. mixture (homogeneous)
4. element, pure substance
5. compound (H2O), pure substance
6. mixture (heterogeneous)
7. element, pure substance
8. mixture (heterogeneous)
9. mixture (homogeneous)
10. mixture (iron oxides), heterogeneous
11. mixture (homogeneous)
12. element, pure substance
13. mixture, homogeneous
14. compound (sucrose), pure substance
15. mixture (homogeneous)
16. mixture (heterogeneous)
17. element, pure substance
18. mixture (heterogeneous)