Science Experiments

temperature does not affect seed germination rate

The dependent variable is monitored as the independent variable is changed. One is testing the effect of the independent variable on the dependent variable (ie effect of dissolved HClO on pH).

low first ionization energy and low electronegativity

Someone suggested that this answer contained gibberish... But whoever answered it did so correctly. When you start a question with "Which" you should provide choices. If you are looking for "physical" characteristics of metals they might be that metals are lustrous, malleable, ductile, and conductive. But all of these properties stem from the molecular properties of the atoms such as low first ionization energy and low electronegativity. So... not gibberish.

When hydrogen burns in air, it combines with atmospheric oxygen to form water. Since hydrogen and oxygen are undergoing a chemical change to become chemically bonded together producing H2O the change is chemical in nature.

Evaporation occurs at all temperatures, there is no set temperature for evaporation. The temperature would only affect the rate at which the liquid is evaporated - all other things being equal, warmer temperatures encourage faster evaporation. Evaporation will proceed much faster still if the surrounding air is very dry, and in constant motion.

It depends on how long it takes for the charge to diminish so that it can no longer hold the balloon against gravity.

Principal factors will be the conductivity of the balloon's material, and the humidity of the air.

power= energy time the time in seconds power= energy time the time in seconds

Rutherford expected the alpha particles to shoot right through the gold foil. At the time it was assumed that an
atom was a mix of electrons and protons. When Rutherford shot the particles through the gold foil some of the
particles reflected back, while most just shot right through. This indicated there was a small dense positively
charged nucleus in the atom.

It's procedure

Hope this helps.

By the way 1 of the easiest ways to find answers to homework and etc is to just type it in on Google!

thx!

th climate in Chile is very very hot in the sumer and freezing in the winter

In the summer it is very very cold but in the winter it can very hot

Thank you for asking hun ^_^

The dependent variable is the variable that can change in an experiment.

Yes, yes it is!

Transformatiom from liquid water to solid water (ice).

Nuts and bolts are solid cylinders with the head. Many companies manufacture nuts and bolts for supplying to other industrial firms. In every construction and industrial work, nuts and bolts are usable. To get more detail about the process and to make deal with a reputed company, contact Mig Enterprises, Fasteners Supplier Sydney.

the chloroplast and the mitochondria are the organnels closely related to energy production in plants

Regardless of the brand of dish soap you use, (other sites claim Palmolive, Ivory, Dawn or other brand), add a small amount of glycerin for blowing bubbles (not for bathing) to make them bigger and more stable. Start with a tiny amount, mix it up, add a little more as you see fit. Glycerin is harmless, cheap (under $2) at any drug store. You can also spread glycerin, or a 50/50 mix of glycerin and water on your hands (it will take a few minutes to rub in and dry) before doing something that will get them dirty (gardening, working on the car, etc.). When you finish, all the grease and grime will just wash right off, even from your cuticles and fingernails.

If the chimney is hot, it indicates that combustion is occurring inside it, not above it. If the combustion continues toward the source, it will explode, and you'll have a bad day.

D=m/v Density=mass/volume de= ma/vo

Density = Mass/Volume

There are hundreds of mini project ideas you can come up with. You can dye Easter Eggs and decorate them with bunny ears for example.

The Earth's core (there is widespread agreement that there is an inner core and outer core) is made up of mainly iron and nickel. The Earth's mantle which rides atop the core is made of ultramafic rock that is believed to be significantly richer in iron and magnesium than the solid crust above.

The Earth's crust could be considered part of the interior, since the continental exolayer that we live on is largely covered with crushed and finely crushed rocky material such as sands mixed with organic material to form soils. The actual crust is only occasionally exposed in outcroppings, and in mountains where the crust has been upthrust by tectonic plate collisions.

Hydrogen (H2) in palladium metal.