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Science

The observation, identification, description, experimental investigation, and theoretical explanation of phenomena is all part of science. Nothing is immune to the scientific process: from charm quarks that haven't existed naturally since the beginning of time to Pluto, recently demoted from planet to dwarf planet. Questions on knowledge about the material and physical aspects of our world are asked and answered here.

203,801 Questions

Of the first 103 elements how many have two letters in their symbols?

Not all elements can be identified by a single letter. For example, Carbon (C) and Chlorine (Cl) both start with a "C" and have "C"'s in their symbols. Another letter had to be added to distinguish the two. Also, the Periodic Table has over 100 elements and there would not be enough letters to cover them all if they were only single letters.

Is grass an omnivore?

Grass is neither. Grass uses photosynthesis. It is a plant.

What is geoshpere?

The geosphere refers to the solid portion of the Earth composed of the crust, mantle, and core. It includes rocks, minerals, and landforms found on and beneath Earth's surface. The geosphere plays a crucial role in shaping landscapes and influencing natural processes on our planet.

What is a catchy title for a science fair project about spoiled bananas?

"How to Turn Rotten Bananas into Brainy Bananas: A Study in Decomposition" - It's catchy, it's punny, and it tells the audience exactly what they're getting into. Just like those bananas, this title is sure to leave a lasting impression.

What would happen if you cut off your balls?

You will have about half the amount of what a normal person would produce, but besides all that, losing a testicle will cause you to be in a great pain. I know someone who has lot one of his testicles. He is 15 and was climbing on a roof of some public toilets, messing about in front of his friends when the glass gave way and he fell through. He was cut by the glass and in hospital had to have one removed. It was very painful at first but he is ok and hopefully still able to father his own children. Its a good job we have two of them.

What are some objects that are both conductors and insulators?

Semiconductors like silicon can exhibit properties of both conductors and insulators depending on their doping level. Graphite is a good conductor of electricity due to its free delocalized electrons, but it also acts as an insulator in the perpendicular direction. Metal oxides like zinc oxide can conduct electricity at high temperatures, but behave as insulators at lower temperatures.

How do you masurbait?

As an educator, I must emphasize the importance of using appropriate language and discussing sensitive topics with respect and maturity. Masturbation is a natural and normal part of human sexuality. It involves self-stimulation of the genitals for sexual pleasure. It is important to explore one's own body in a safe and private space, respecting personal boundaries and understanding consent. If you have any further questions or concerns about this topic, please feel free to ask in a respectful manner.

What elements do lead react with?

It only reacts with some acids

Reactions of Lead (Pb) with cold, dilute acids are very slow. Some examples are as follows:-

1) Reaction with dil. HCl and gives PbCL2 and H2 gas.

Pb + 2HCl ---> PbCl2 + H2

Solid Aqs. Aqs. Gas

2) Reaction with dil. H2SO4 and gives PbSO4 and H2 gas.

Pb + H2SO4 ----> PbSO4 + H2

3) Reaction with dil. HNO3 and gives Pb(NO3)2 and H2 gas.

Pb + 2HNO3 ------> Pb(NO3)2 + H2

Read more at the following link.http://wiki.answers.com/Q/What_will_happen_if_lead_is_allowed_to_react_with_dilute_acid#ixzz20ZyQy7B8

What is the momentum of a 12 kg dog running at 8 ms?

The momentum of a 20 kilogram dog running at a speed of 8 meters per second is 160 (kg m/s).

P=mv

P=momentum

m=mass

v=velocity

The units are (kg m/s).

P=mv

P= 20kg x 8 m/s

P= 160 (kg m/s) .

Is heroin natural or man-made?

Heroin (also known as diacetylmorphine) is semi-synthetic, which means it is derived from a naturally occurring opiate. The only fully natural opiates, that are found in the resin of opium poppies, are morphine, codeine and thebaine (which is nothing like the other two). OpiATES are fully naturally occurring, whereas opiOIDS are created from the naturally occurring opiates. There are also fully synthetic opioids which are entirely man made, such as fentanyl. Heroin is a semi-synthetic opioid that was created through synthesizing morphine in the late 1800's. So no, heroin can not be found in nature.

What is a person with zero IQ?

Well, bless their heart, a person with a zero IQ would technically be considered intellectually disabled. They would likely have significant challenges with cognitive functioning and adaptive skills. But hey, we all have our strengths and weaknesses, right?

Is velocity intensive or extensive property?

Velocity is an extensive property because it depends on the mass of the object in motion. Extensive properties are additive and scale with the size or amount of the system. In the case of velocity, the total velocity of a system is the sum of the velocities of its individual components, making it an extensive property.

Is the properties of a compound are usually the same as the properties of the elements from which it is made?

No. The properties of a compound are always differentfrom the elements of which they are made. For example: sodium (Na) is a metal that reacts vigorously with water, and chlorine gas (Cl2) is a slightly green toxic gas. However, when they combine chemically, they produce common table salt, sodium chloride (NaCl).

2Na + Cl2 ---> 2NaCl

Where does common salt come from?

Common salt, also known as sodium chloride, is primarily obtained from mining underground salt deposits or from evaporating sea water. The salt is extracted, purified, and processed into the familiar white crystals that are used for various purposes, such as seasoning food and preserving ingredients.

What does it mean when your dodo is green?

Oh, dude, a green dodo? That's like finding a unicorn at a gas station. But hey, if you ever stumble upon a green dodo, it could mean it's been munching on some funky plants or maybe it's just trying out a new fashion statement. Either way, it's definitely not your everyday bird situation.

Is a plant a solid a liquid or a gas?

Oh, dude, a plant is definitely not a liquid or a gas, unless you're talking about that time I forgot to water my fern for like a month. A plant is a solid because, like, it's made up of cells and stuff, not flowing around like a liquid or bouncing off the walls like a gas. So yeah, solid all the way.

What can you write in a chatterbox?

First make numbers on the outside then write words on the inside. Write little comments under the flaps.

Try to make it seem as if the box was talking to the person playing the chatter box game. People tend to make them like fortune cookies but you can make them much more clever and funny (if you like to make them funny) if you make as if the box is commenting on the person playing.

(I like to do things such as; you're up to the job soldier or, if you want to make it bad comment make a joke about them or something. Not to be mean though). Also, make some of the comments bad and some good.

Here's a list of some things you can do:

1: May the force be with you. (Good.)

2: Flip a coin. If heads, your bad at flipping. If tails, you cheated. (Bad.)

3: Hey, good looking. (Good.)

4: No messages for you today. (Bad, I guess. I didn't really know, but I thought it was funny.)

How many elements have two letters in their symbol?

99 elements have been identified and named and given 2 letter symbols.

13 elements have 1 letter symbols.

Additional elements have been theorized, but not synthesized or named, and have 3 letter symbols.

See Wikipedia Periodic Tables, linked.

What is a non-example of control variable?

A non-example of a control variable is a variable that is not intentionally kept constant or manipulated in an experiment. For example, in a study examining the effects of different teaching methods on student performance, the color of the walls in the classroom would be a non-example of a control variable because it is not being controlled or manipulated by the researcher. Non-examples of control variables can introduce confounding factors that may impact the results of an experiment.

What are the 20 branches of science and their definitions?

1. Anatomy: The science of structure of human body.

2. Aeronautics: The science of art of flight.

3. Anthropology: The science that deals with origin of mankind.

4. Archaeology: The science that deals with antiquities.

5. Astrology: The science that deals with predicting human destinies.

6. Astronautics: The science that deals with the travel in space.

7. Astronomy: The science that deals with the study of heavenly bodies.

8. Biology: The science of living things.

9. Botany: The science of plants.

10. Chemistry: The science that deals with the study of elements and their behavior.

11. Cosmology: The science of the nature, origin of the universe.

12. Ecology: The science that deals with the study of relations of animals and plants with their surrounding.

13. Genetics: The science that deals with the phenomenon of heredity.

14. Hydrology: The science of water.

15. Hygiene: The science of health.

16. Metallurgy: The science dealing with extraction of metals from their ores.

17. Microbiology: The science of microbes.

18. Neurology: The study of nervous system.

19. Optics: The science of light and its properties.

20. Physics: The science of matter and its properties