Science Experiments

The compound P4O10 is named tetraphosphorus decoxide.

A physical property is something that can be changed without changing the actual composition of something, such as shape or density. A chemical property is something that actual is part of the composition of the object, such as atoms or mass. Think of it like a car, a physical property of the car is its shape or condition. You can dent the car, even send it to get crushed into a square at the junkyard, technically its still the same. Everything that made it up is still there. However if there is rust, metal is being eaten away when reacting with oxygen, metal was part of made up the car and now some is missing and the composition is not the same as before, showing it is a chemical property.

Since the "law of conservation of energy" states that energy cannot be created or destroyed, all energy is never really destroyed only changed.

Chemical energy is converted into thermal energy by certain chemical reactions, like combustion (when something is burned) or when fat is metabolized into heat for the body for example.

Independent variable: the variable that is intentionally changed or manipulated by the researcher. Dependent variable: the variable that is measured and affected by changes in the independent variable. Control variable: a factor that is kept constant and not changed throughout the experiment to ensure that any observed effects are due to the independent variable.

7000 kg

(African males)

3600 kg

(African females)

2300 kg

(Asian males)

3000kg

(Asian females)

5400 kg

(Asian male)

4160 kg

(Asian female)

5455 kg

(savannah male)

4545 kg

(forest elephant)

Balloon powered cars utilize potential energy stored in the balloon as it is inflated. When released, this potential energy is converted into kinetic energy that propels the car forward. Friction and air resistance also play a role in the energy transfer process.

The scientific word for mistake is "error." It refers to a deviation from the expected or correct outcome in a process, experiment, or calculation.

Water with lemon juice and salt is a refreshing and hydrating drink that can help replenish electrolytes lost through sweating. It is commonly consumed as a homemade sports drink to rehydrate and balance sodium levels in the body.

Ions in water are charged particles that result from the dissociation of salts or other compounds in water. They can be positively charged (cations) or negatively charged (anions). These ions contribute to the conductivity and chemical properties of water.

In science, work is defined as the product of force applied to an object and the distance over which the force is applied. Mathematically, work is calculated as W = F*d, where W is work, F is force, and d is distance. Work is a measure of energy transfer that occurs when a force moves an object over a distance.

Air resistance against the car as it travels and the friction of the wheels against the ground slows it down and so reduces the toy car's potential travelling distance

The weight of the car\on the car, the slope of the ramp and the material the car lands on or on the ramp

Rubbing sandpaper back and forth quickly over a piece of wood will smooth the surface of the wood by removing uneven spots, rough patches, and splinters. It will also create friction that generates heat, which can burn the wood if excessive pressure is applied or if the sandpaper grit is too rough.

The cost of a solar powered car kit for a science fair project can range from $20 to $100 or more, depending on the quality and complexity of the kit. It is also possible to build a simple solar powered car using basic materials like cardboard, wheels, a small motor, and a solar panel, which may reduce costs.

Nails do not rust in milk because milk does not contain the elements necessary for the rusting process to occur. Rusting requires moisture, oxygen, and iron to create iron oxide, which is what we commonly refer to as rust. Milk lacks the oxygen component necessary for rusting to happen.

Transmutation of lead into gold isn't just theoretically possible - it has been achieved! Glenn Seaborg, 1951 Nobel Laureate in Chemistry, succeeded in transmuting a minute quantity of lead (possibly en route from bismuth, in 1980) into gold. There is an earlier report (1972) in which Soviet physicists at a nuclear research facility near Lake Baikal in Siberia accidentally discovered a reaction for turning lead into gold when they found the lead shielding of an experimental reactor had changed to gold. Today particle accelerators routinely transmute elements. A charged particle is accelerated using electrical and/or magnetic fields. This makes one "re-think" what CERN's Large Hadron Collider could be used for, instead of searcing for the "higgs-boson" particle.

Additionally, while it may never be commonplace to transmute lead into gold, it is practical to obtain gold from lead ores. The minerals galena (lead sulfide, PbS), cerussite (lead carbonate, PbCO3), and anglesite (lead sulfate, PbSO4) often contain zinc, gold, silver, and other metals. Once the ore has been pulverized, chemical techniques are sufficient to separate the gold from the lead. The result is almost alchemy...almost.

Can anyone guess what would happen to the world's related economies if it were discovered that some entity had discovered a relatively simple way to transmute lead/bismuth into gold? The process for making REAL diamonds has already been learned, so certainly, anyone investing in diamonds is a pure fool. Chemistry is the smarter brother of Alchemy. BS? Don't kid yourself, the world has many secrets, and making GOLD is probably already being done-in my opinion.

When substances are dissolved in a liquid, they form a homogeneous mixture where the particles of the solute are dispersed uniformly throughout the solvent at a molecular level. This results in the solute being evenly distributed in the solvent, creating a solution. The solute particles are surrounded by solvent molecules, allowing the solute to remain suspended or dissolved in the liquid.

Nucleoplasm was discovered in and orchid cell, in 1831 by Robert Brown. Nucleoplasm is the fluid usually found in the nucleus of eukaryotic cells. The nucleoplasm acts as a suspension medium for the organelles of the nucleus.

Independent and dependent are types of variables. These variables are used mostly in science and math. When using independent variables you can control them dependent variables you cannot.

In the ending the Dr. of Val Kilmer was actually in on the experiement but didnt plan on Pettis to take it that far! The girlfriend at the end then decides we have to kill Pettis because he knows too much and can charge us with murder!!

Newton's first law of motion, also known as the law of inertia, states that an object at rest will remain at rest, and an object in motion will continue in a straight line at a constant velocity unless acted upon by an external force.

Endoscopes are made from fibre optic cables which have a greater refractive index than that of their surroundings. Therefore light is refracted away from the normal as it passes from one medium to another. The fibres have to be made of special glass, and each fibre has to be coated with a layer of glass of a different refractive index. At a certain angle, no refraction takes place and the light is only reflected. This is called the 'critical angle'. The light is then said to have undergone the principle of total internal reflection. Close to 100% of the incident light is reflected making it more efficient than the most superior of conventional mirrors. Fibre optic cables use this notion as the light enters the fibre. As it enters it is totally internally reflected until it exits out the other end of the fibre.

Trees have evolved to grow in response to gravity, with roots anchoring them in the ground and branches reaching toward the sky for sunlight. The structure and function of a tree are dependent on this orientation, so growing upside down would not be conducive to its survival. Additionally, water and nutrients would have difficulty flowing against gravity in an upside-down tree.