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What else can I help you with?
When do you say that a substances has lower density than water?
A substance has lower density than water when it floats on water. This indicates that the substance is less dense than water.
What does it mean when we say a substance is water soluble?
It dissolves in water.
Is water a substance or a mixture Why did you say so?
water is a substance, made of oxygen and hydrogen, because mixing ox and hyd would give nothing but explosion, water is an effect of chemical reaction, not only mixing gases
Is water a mixtrure or pure substance?
Water is a compound having a chemical formula of fixed proportions, and as such is a pure substance. Its chemical formula is H2O, in which the two hydrogen atoms are covalently bonded to the oxygen atom.
Is a hydrate a pure substance or a mixture?
A hydrate is considered a pure substance because it contains a specific ratio of water molecules to other molecules within its crystal structure.
When a substance can dissolve in water you say that it is?
.. the substance is soluble
Does salt dissolve in vegetable oil?
Salt cannot dissolve in oil. This is because salt is a non-polar substance, because it's bonds are non-polar (this is not to say though that polar bonds always means its a polar substance, but that's another issue). Oil is a polar substance (meaning one end of its molecule is has a slight negative charge, the other a slightly positive charge. It is known that LIKE dissolves LIKE. (e.g. Polar dissovles Polar). There are VERY few exceptions to this.
How will you identify the physical properties from chemical properties of water?
1 = when we mix the water with the benzene or any other non polar solvents it does"t miscible with that, this is a chemical reaction from this reaction we can say water has polar properties 2 from above we can say water is polar , in polar solvents inter atomic attractions are more due to this it has high MP like these we can explain all properties
When do you say that a substances has lower density than water?
A substance has lower density than water when it floats on water. This indicates that the substance is less dense than water.
What polar molecules are attracted to water?
Polar molecules with positively charged regions, such as ammonia and alcohols like ethanol, are attracted to water due to hydrogen bonding. Additionally, polar molecules with negatively charged regions, such as acetate ions, are also attracted to water for the same reason.
What do molecules do in water?
Hydrophobic molecules do not dissolve in water. This is because water is hydrophilic. Another way to say this is that lipids, which are nonpolar, cannot dissolve in water, which in polar.
Why does non polar molecules repel water molecules?
Because it is like a magnatizing ordeal so to say and it just bounces of non polar molcuels. :)
What does it mean when we say a substance is water soluble?
It dissolves in water.
Is homogenous a pure substance?
A homogeneous substance is the same throughout. So, a bar of pure gold, a diamond, pure water, saline water (water with salt dissolved in it) and nitrogen gas are all homogeneous, as they consist of the same substance(s) throughout. In other words, they are regular.So, you could say that a homogeneous substance is a puresubstance.
Is water a substance or a mixture Why did you say so?
water is a substance, made of oxygen and hydrogen, because mixing ox and hyd would give nothing but explosion, water is an effect of chemical reaction, not only mixing gases
Is water a mixtrure or pure substance?
Water is a compound having a chemical formula of fixed proportions, and as such is a pure substance. Its chemical formula is H2O, in which the two hydrogen atoms are covalently bonded to the oxygen atom.
What is a substance that does not dissolve?
insoluble precipitate, precipitant ----------------------------------------------------------- It is really dependent on the solvent. Table Salt (NaCl) will dissolve in water, but does not readily dissolve in many oils. Gold is relatively inert, but will dissolve in a mixture of Nitric Acid and Hydrochloric Acid. Glass is relatively inert, but can be etched by hydrofluoric acid Teflon is a type of plastic that is inert under many conditions. A pure diamond is essentially a single molecule, and is relatively inert, but would potentially react in some situations.
