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Because it's not pure water. It has other minerals and additives in it, which throw off the pH a bit. Tap water's pH can vary by region of the country, or world depending upon what else is in it besides water. Even bottled water isn't pure; you have to distill it.
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What would melt faster a normal ice cube or a sea water ice cube?
A sea water ice cube would melt faster than a normal ice cube because sea water has a lower freezing point due to the presence of salt. This means that it would require less heat energy to melt the sea water ice cube compared to a normal ice cube.
What happens to you fingertips when you spend too much time in the bathtub or a swimming pool. Would adding bath salts to the bath water change the outcome?
Your fingertips and toes absorb water and become wrinkled as the swell, bath salt will not change this, your fingers and toes go back to normal as they dry out.
If you had a bathtub full of water would the density of all of the fluid in the tub be the same as only 1 gram of the liquid?
No, the density of a bathtub full of water would not be the same as just 1 gram of water. The density of water is a constant value regardless of the amount of water present. Density is defined as mass per unit volume, so 1 gram of water would have the same density as any volume of water.
Would oil dissolve in water yes or no?
No. Under normal circumstances oil and water are immiscible (they will not mix)
Does sugar water evaporate faster than normal water?
Yes, sugar water would evaporate slower than normal water because the presence of sugar in the water would increase its boiling point and therefore slow down the rate of evaporation.
What is the pH of boiling water?
Normal water contains impurities and minerals, so during boiling, these impurities are expelled, but this changes the pH value a little, thus the pH value would be about 7. Boiling pure water (pH7), will result in boiled pure water being at pH value 7, as there are no impurities or minerals in it
Is movement a chemical change?
No, That would be a physical change....A chemical change would be for like example: Water Evaporting, Water Boiling, Water Freezing...etc
Why would your car leak water from the tailpipe when its on?
Water is a by product of the combustion and is normal.
What is normal inr value?
Normal INR levels for someone not on blood thinner therapy (e.g. Coumadin) would be about 1.0.
What is water natural pH?
I think you are speaking about 'normal' or 'neutral' pH. This would correspond to a value of 7.0 on the pH scale and is generally associated with pure water. Check this for more details: http://en.wikipedia.org/wiki/PH
Would the value of each substance change if each were moved into a larger container?
The value will not change because no temperatures have been applied.
How does water change weather?
without water there would be no weather
What change causes light to be refracted as it travels from air to water?
The change in density between air and water causes the speed of light to change, leading to refraction. Light bends towards the normal when it enters a denser medium like water, due to its lower speed in water compared to air.
When will be your next normal period after miscarriage?
you'll just go through a change in your menstrual cycle but then after a month it would be normal.
What would melt faster a normal ice cube or a sea water ice cube?
A sea water ice cube would melt faster than a normal ice cube because sea water has a lower freezing point due to the presence of salt. This means that it would require less heat energy to melt the sea water ice cube compared to a normal ice cube.
What is the difference of freezing points between sea water and normal water?
Not as much as I would of thought. Normal water freezes at 0 degrees and lower. Salt water freezes at about -2digrees,(-1.93 to be exact)
What would happen if a normal cell were placed in a beaker of pure water?
it would absorb more and more water until it will explode
