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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
What is the pH level for deer park bottled water?
Ultrapure water has the pH=7; bottled water is not pure, so the pH is variable depending to the type of water.
Does vinegar and water stain clothes?
Neither white vinegar nor water stains clothes. Red wine vinegar may though, as it is made red wine which stains.
Which of the following best describes a manipulated variable?
Fifteen turtles are fed iceberg lettuce and vitamins, while another fifteen turtles are fed only iceberg lettuce
What are size dependent and size independent properties of matter?
hey....the size independent properties are....density, melting point, solubility, ability to attract a magnet, state of matter, color, and boiling point.
What liquid will cause a penny a nail paper cilp to rust?
any liquid that had hydrogen, oxygen and is moist (of course it will be moist)
to rust it need all the materials above
can make pennies rust
remember rusting only applies to iron items.
to preserve pennies you can store them in oil
An observation of some activity or the act of taking some measurement is called?
quantitative ^-^ i actually got it right!
What kind of variable is part of the experiment that is affected by the independent variable?
Dependent Variable
the independent variable is the one you change to get the dependent variable. The control group is the thing that you leave the same throughout your experiment.
Hint: You don't want too many independent variables, it will mess up the experiment.
How do you make solid Mercury?
i am srinivas.i know so maney process of solidification of mercury.i told one process. take 25grams coppursulpate and 25grams eating salt .do two compounds powder...add 150ml water desolve coppersulpate and eating salt.this soluction keep in alumineum bowl add 10 grams mercury.when reaction starts .stay ten minuts.the mercury turn solid.
How do you make your pen explode?
It is physically impossible to make your pen explode unless you use TNT.
Why is it important to let water to become still before an experiment?
If water is not still before an experiment then if the experiment involves measuring water then the measurement would not be accurate. Also if there is something in the water you might spill it out and spoil your experiment.
What is similar in the ways scientists study problems?
Some ways Scientists solve problems are that they follow the 7 steps of the scientific method which are problem, research, hypothesis, experiment, collect data ,conclusion, and repeat the process because that is how you experiment on objects. They can use this helpful tool to solve a problem.
How does a whistle make sounds?
Air travels through the whistle rubbing against the sides of the whistle than being forced out of the smaller opening at the front. The friction of air against the sides of the whistle is what makes the noise.
What is another agent of pollination?
That would be flying insects such as bees, as well as small birds (hummingbirds). They collect nectar for their own food, and in the process of collecting food, they spread pollen between different plants of the same species and within the flowers of the same plants as well. Pollen in plants serves the same purpose as male reproductive cells (sperm cells) in mammals.
What is a solid material formed in nature with particles arranged in a repeat pattern?
This is the definition of a crystal, which is a mineral that has atoms with specific repeating patterns. A crystal is a chemical compound formed by natural processes, such as magmatic and metamorphic processes.
Which parts in a nucleotide change and what parts stay the same?
A single-nucleotide polymorphism (SNP, pronounced snip) is a DNA sequence variation occurring when a single nucleotide - A, T, C, or G - in the genome (or other shared sequence) differs between members of a species or paired chromosomes in an individual. For example, two sequenced DNA fragments from different individuals, AAGCCTA to AAGCTTA, contain a difference in a single nucleotide. In this case we say that there are two alleles: C and T. Almost all common SNPs have only two alleles.
Within a population, SNPs can be assigned a minor allele frequency - the lowest allele frequency at a locus that is observed in a particular population. This is simply the lesser of the two allele frequencies for single-nucleotide polymorphisms. There are variations between human populations, so a SNP allele that is common in one geographical or ethnic group may be much rarer in another.
Does cold water stay colder in a plastic cup or a foam cup?
You're talking about holding the temperature of the water, right? As far as containing the liquid, they're about equal...but a styrofoam or double-wall plastic cup would hold temp better than a glass cup which would work better than a single-wall plastic cup.
Alcohol is a term used for any O-H group that is attached to a carbon.
Perhapes the alcohol is found in a Safranin stain. I hope I have this right but if alcohol was used as the decolorizing agent, it may wash out too much stain to get a good view in an oil emersion microscope.
In which of the following ways can scientific knowledge change and grow?
a popular scientist states that a prevailing theory is not correcta single experiment disproves a prevailing theorya large number of experiments challenge a prevailing theory-experiments reaffirm the validity of a prevailing theory.
What kind of organism is bread mold?
Fruit mould is a fungus called Penicillium from which is made penicillin. Bread mould is a fungus Mucor and a slime mould is probably a different, more obscure type of fungus.
Define the conservation of momentum?
the principle that the total linear momentum in a closed system is constant and is not affected by processes occurring inside the system.
What are 5 different kinds of wetlands?
these are the 5 types of classifications for wetlands.
1. MarineAssociated with the open ocean and high-energy coastline waters
(includes coastal wetlands, such as tidal marshes)
2. EstuarineConsisting of deepwater tidal habitats and adjacent tidal wetlands that, at times, have access to the open ocean; occasionally diluting sea water with freshwater runoff.3. Riverine
Found along rivers and streams4. Lacustrine
Associated with lakes5. Palustrine
May be isolated or connected wet areas, including marshes, swamps, and bogs
What state of matter would acetone be in at 42 degrees C?
At 84°C it would be a vapor because its higher then 56.2°C and the acetone will evaporate
