Science Experiments

Try staying off the drugs next time you go to a rave so you can get a count on your heart rate.

In order for something to oxidize, it has to LOSE ELECTRONS. If it comes in contact with something that is more likely to accept those electrons, than to lose its own electrons, then an oxidation/reduction reaction will occur.

Its mass

The bottle that contains only yeast and water.

The experimental group in the bottle with yeast, water, AND sugar.

A parameter in an experiment that can change is known as a variable.

No. A cabbage is grown and used as a vegetable. As the heart is cut before maturity it does not get time to flower though it would if left alone.

Sublimation is, in fact, a universal phenomenon exhibited by all solids at temperatures below their triple points. However, sublimation is a scientifically and technically useful phenomenon only when the vapor pressure of the solid phase is high enough for the rate of vaporization to be rapid. Four of such solids include iodine, sulphur, naphthalene, and even dry ice (solid carbon dioxide).

Arsenic when heated will form Arsenic Trioxide which has an order resembling garlic.

It will foam up in the stomach and make you burp.

hypothesis :)

One could be a fixed shape like a brick or cube and the other could be something less dense like a sponge, potato or a tube of toothpaste.

The variable measured in an experiment is called the dependent variable" the outcome factor". In contrast, the independent variable is the experimental factor that is manipulated; the variable who effect is being studied.

The control group.

Scientists write a conclusion after an experiment. The conclusion will summarize the details of the experiment, and whether or not the hypothesis tested was correct.

A scientific paper published in a peer-reviewed journal is where the rationale, methods and materials, results and conclusions for a scientific experiment are reported. At the beginning of the paper or article (the terms are interchangeable), most journals require an abstract, which summarizes the experiment and results in a paragraph.

There is no point in performing experiments or observations if you don't report on them, initially perhaps for your own use, or within the lab or institution or company; but more widely as a formal, peer-reviewed paper in an appropriate learned journal.

In professional cases you are contractually obliged to write reports for your employers at least. It's what they pay you to do.

Steam, which can't be seen, not to be confused with the white clouds that come from a boiling kettle that is water vapour or condensed steam. If you look closely at the spout of a boiling kettle you will see that close to the spout it is clear that is steam or water in its gas form.

a solution to a maths problem.

a mixture of reasons

Root beer is a solution

Mixture is variable composition can either be homogenous or heterogenous. Solution is a homogenous mixture

Root beer is an example

As long as the particles of sand and pebbles are of different size, you can separate them using a sieve (sifter). The smaller sand particles will pass through the sieve whereas the pebble molecules will not. This is the process that occurs in sifters sold as children's toys.

Its a miture

Sometimes, even when scientists try their hardest, they miss important things that should have or could have been controlled in their experiments. After all, anyone conducting research of any kind will have to start with a set of assumptions about the observations being studied. But it is not always clear that researchers in a given field are sharing the same set of initial assumptions. If scientists don't even make an effort to be clear and objective, and let biases affect their thinking, then conflicts and problems multiply. From a radical point of view, it is probably ok for scientists to be as completely biased as they want to be, provided that they are breathtakingly and completely honest in how they report the construction, controls, results and biases that went into the research. Being biased is absolutely NOT the same thing as being dishonest or deliberately mis-leading. Blatantly mis-reporting or mis-representing data and analysis is NEVER ok, although it does occur from time to time.

control group

A snowball floats until all the air within it is replaced by water and the ice crystals melt. Then it will disappear into the water.

This is called a reference point.

If the substance under test is purer than the standard, the assay comes more than 100 pct.

a factor that changes in an experiment from manipulation of the independent variable is the?