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What would your hypothesis be regarding how the pH color of the water will change as you expose Elodea to light What about in the dark?
When the elodea is in the light it will do photosynthesis, and a product of this is CO2 . Some of the CO2 reacts with the water to become carbonic acid. This causes the water to be more acidic. When the plant is in the dark it respirates to get energy from the sugars it has produced. A product of this is O2 gas, which makes water more neutral. Depending on the pH test used the color will be different.
What else can I help you with?
What can be done if its not possible to construct a controlled experiment in order to test a hypothesis?
it is difficult to control all variables except the one being tested
Is altra- violet dangerous?
yes, it is dangerous. if you expose your eyes to the sun they might get dry or it can cause some type of disease in your eyes. there are many types of diseases in the eyes, one is you might get blind. so don't expose your eyes under the sun, that's why we use sunglasses to protect our eyes
Why can't you see your bell end?
You are not circumcised from your description. By about 16 or so your foreskin will retract and you should be able to fully expose the glans. Start stretching - NOW. Use your fingers to spread the opening OR and pull down on the shaft skin
How do we test hypotheses?
by collecting data. Experimentation In our experiments we attempt to set up conditions so that we know that the outcome of the experiment is the result of the variable that we are manipulating. I hypothesize that a given substance will have a positive effect on plant growth. I will set up several experimental conditions, holding everything constant in each group except the substances given for growth. I observe the growth of the plant, and draw my conclusions. The hypothesis may hold, or it may need to be modified. For example, I notice that the substance that inspired the hypothesis may have caused growth that was too fast, leaving spindly and non-productive plants. I may want to continue the development of the substance, or perhaps find a way to blend it with other substances, and then continue the experimentation. _______________ Here is another example: I am investigating the properties of water, and I need to know all I can about how water, ice and heat interact. I know that when water gets cold enough, it freezes, and that when ice is exposed to heat, it melts. I might come up with a hypothesis-- a first attempt to understand what is happening with water and ice. I hypothesize: Since water is the liquid state of H2O, and liquids are warmer than their solid forms, water must be warmer than ice. It must be that as soon as water forms from melting ice, it is at least a little warmer than the ice. After all, at zero degrees water becomes ice. At this point, I do not know for sure, but I am speculating (hypothesizing) based on the general information that I have. I wonder how I can test my hypothesis: Let us assume that I can measure the temperature of ice and of water with great accuracy. I should be able to easily make a mixture of ice and water, while measuring the temperature of each independently.If my hypothesis is correct, I will find that at one atmosphere of pressure and in a chamber kept at exactly zero degrees Celsius the ice will warm to zero degrees Celsius (if it starts out colder than that) and it will get no warmer. When it is warmer, it is water and not ice.I will also observe that the water will be at least a little above zero degrees Celsius when it first melts away from the ice.I apply heat to the ice and some ice melts.To my surprise and annoyance, I find that the water is exactly zero degrees Celsius. We have a problem. My fellow engineers need an answer, and I've been hyping my hypothesis all over the place..... Eureka! I have found it! Keeping the chamber at zero degrees is the problem; as soon as the ice melts, the chamber air starts to cool the water, and it must also be cooling the thermometers, leading to an experimental error in the readings! I'll keep the chamber at 5 degrees Celsius.... I go back to the lab and I notice that my containers now all have a mix of ice and water, and the chamber is at exactly zero degrees Celsius. Not only that, all the ice is now at zero degrees Celsius, and so is the water! Exactly! Now I am just plain confused. I leave the chamber exactly as it is for several days and nothing changes. Everything in the chamber is verified to be at zero degrees Celsius, water is not in the process of freezing, and the ice is no longer melting. It just all stays in equilibrium. If my hypothesis had been correct, there would be no water in the chamber, because supposedly at zero degrees Celsius all water is ice, and "water is [so I hypothesized] always at least a little above zero degrees". My hypothesis has tanked; time for a new one. I wonder and wonder, and spend a few sleepless nights. Then I realize-- it has something to do with heat; it must. It has something to do with adding or with taking away heat... Hmmm. Testing a hypothesis is something like that. You wonder, and you explore. Hypotheses develop, and may become well-known theories when they seem to be able to withstand test after test designed to expose them false. When you think about it, how would you develop an experiment that exposes a hypothesis as true? They would be the very same tests, with results that support the hypothesis. Reality determines the outcome, not really the 'test'. A silly or inconsequential test will still show results in support of reality. But as mentioned above, even if all completed tests support a hypothesis, that is not to say that some unexpected approach will not be applied tomorrow.
At what point does oxygen melt?
I am a chemist at the university of south carolina and i have been experimenting on the melting point of oxygen. Oxygen at its melting point acts very stable . it dosnt act uncontrolable.
Who sings seasons never change?
Expose
Who are the people that dig up dirt to expose change?
Whistle Blowers.
How do you change a igneous rock to a metamorphic rock?
you expose the rock to extreme heat or pressure such that the rock changes.
How to change speakers in 2001 blazer?
To change the front speakers, you will have to remove the door panels to expose the speakers. Once exposed, unhook them by disconnecting all the wires.
What part of speech is expose?
Expose is a verb.
What is the Tagalog of expose?
Tagalog translation of EXPOSE: ihayag
What is the past tense of expose?
Exposed is the past tense of expose.
What can you do about corruption?
Political reforms on the part of governance and behavioural change communication to expose individuals to proper ways of conducting business.
When was Expose This created?
Expose This was created on 2004-07-13.
How do you change a battery in a 2003 dodge stratus?
Remove the front driver side tire. There is a panel that comes off to expose the battery.
Which liquid can be change into solid?
Any liquid can be changed into solid, if you can manage to expose it topressure that is high enough and temperature that is low enough.
How do you change thermostat on 2002 mercury villager can't get bolts off?
To change the thermostat on a 2002 Mercury villager, pull the hose away. If the bolts do not come off, wiggle the fitting to expose the thermostat to be able to change it.
