True or false when elements chemically combine they usually form compounds that have properties that are similar to those of the uncombined elements

Answers

Answer 1
Answer:

The statement is False, because compound made up of elements which may have different properties. water is made up to oxygen i.e. gas and hydrogen which is also a gas, while water is a liquid and a good solvent.

What are the characteristics of water  ?

Water can be amphoteric in nature, as it act as both acid as well as a base, highly viscous in nature due to the force of attraction exists between molecules.

Water can be used in  Redox reaction as it help to get dihydrogen molecules quite easily, the dielectric constant of water is also high, form many different connections and attachments with other chemical compounds known as hydrates.

A substance show the normal behavior when it  reacting to heat, like that compounds expand after exposed to heat and decreasing their density, and after some time their density increases, and matter contracts when cooled, while in case of water this property is opposite.

Below  the temperature of   4 degrees Celsius the water  behaves ordinarily, however when it is cooled further, its unusual properties are being observed.

when water cooled, the density slowly increases, further cooled down leads to decrease in the density of water and the matter expands, which is called as the anomalous property of water occurs between temperatures of 4 degrees Celsius to 0 degrees Celsius.

Learn more about water, here:

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Answer 2
Answer: False, the compounds formed by elements don't always have similar properties.

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What inner planet has enough gravity to hold on to all its gases

Answers

I'm gonna go with Earth, because it can more than that. It's our home planet. :-) XD lol
The earth has enough gravity to do that

How do i describe how a constant volume calorimeter can be used to measure the heat transferred from a burning piece of coal to cool water.

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 calorimeter is a device used to measure the amount of heat involved in a chemical or physical process. For example, when an exothermic reaction occurs in solution in a calorimeter, the heat produced by the reaction is absorbed by the solution, which increases its temperature. When an endothermic reaction occurs, the heat required is absorbed from the thermal energy of the solution, which decreases its temperature ([link]). The temperature change, along with the specific heat and mass of the solution, can then be used to calculate the amount of heat involved in either case.

The students who conducted the shadow length experiment concluded that their results concluded that their results supported their hypothesis. Can their supported hypothesis be called a scientific theory? Why or why not?

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Confirmation bias, also called confirmatory bias or myside bias, is the tendency to search for, interpret, favor, and recall information in a way that confirms one's preexisting beliefs or hypotheses, while giving disproportionately less consideration to alternative possibilities.[Note 1][1] It is a type of cognitive bias and a systematic error of inductive reasoning. People display this bias when they gather or remember information selectively, or when they interpret it in a biased way. The effect is stronger for emotionally charged issues and for deeply entrenched beliefs. People also tend to interpret ambiguous evidence as supporting their existing position. Biased search, interpretation and memory have been invoked to explain attitude polarization (when a disagreement becomes more extreme even though the different parties are exposed to the same evidence), belief perseverance (when beliefs persist after the evidence for them is shown to be false), the irrational primacy effect (a greater reliance on information encountered early in a series) and illusory correlation (when people falsely perceive an association between two events or situations).

Are all conduters magnetic

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No. Unless a current is flowing

Name five kinds of landforms caused by plate movement, help!!

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Volcanos,iceberg, tsunamis,earthquakes and plate rotation ? I don't what The last one
Is...
I know for sure volcanos are formed

Why is radon gas hazardous?

Answers

Answer:

Usually lung cancer.

Explanation:

It causes cells in your lungs to be damaged, which can lead to lung cancer.

Usual symptoms include

persistent cough

coughing up blood

wheezing

shortness of breath

hoarseness

chest pain, especially when you cough or laugh

frequent infections such as bronchitis and pneumonia

Radon is part of the environment and generally isn’t harmful. But long-term exposure to high levels of radon can put you at risk of developing lung cancer, especially if you smoke