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Q: What is a chemical formula and give the example for water?
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What does a chemical formula communicate?

A chemical formula shows the composition of a substance. It shows the elements present and their relative numbers. There are several types of formula which give specific types of information, but that's the basics.


What is changed when matter undergoes a physical change give an example to explain your answer?

The physical properties of the material are changed; example - water: ice, liquid water and water vapors have very different properties but the same chemical formula.


Does a chemical formula indicate the relative number of molecules of each kind in a chemical compound?

yes, for example H2O (water) there are 2 hydrogen molecules and 1 oxygen. There are other kinds of chemical formula, such as the empirical formula that give you the smallest ratio of atoms, for example glucose C6H12O6 (6 carbons 12 hydrogens and 6 oxygens) would be CH2O however it should state if the formula is any other type then just the normal chemical formula.


What is molecular composition and give an example?

Methane has the chemical formula CH4; hydrogen is 25 % and carbon 75 %.


Does water give off H20?

H2O is the chemical formula of water. Water does not "give off" water. when water produces steam or water vapour, the gas it gives off chemical make up is the same as water, which is H2o, so arguably it is giving off H2o.


What is a molecule how do scientists show the chemical composition of molecules give an example?

A molecule is the smallest unit of most chemical compounds. Scientists use a kind of shorthand called a chemical formula that shows the type and number of elements in a molecule. For example, a water molecule is written as H2O, which means there are 2 atoms of Hydrogen and 1 atom of Oxygen.


Is rock a chemical?

Kinda sorta not really. Any given specific type of mineral is going to have a chemical formula. However, "rock" is generic enough that we don't know what it is (for example: it could be an aggregate of several different types of minerals) and therefore can't give a chemical formula for it.


How do you identify and kinds of atoms in a given compound based n its chemical formula?

The chemical formula is representative for a molecule and give indication about the chemical composition.


Give 50 compounds with their chemical formula?

sodium


Formula transformation and give an example of formula?

explain formula transformation


What is the chemical formula for hydrolyzed soy protein?

give me the chemical formula for soy protein


Give an example of the chemical formula of a compound What does this example tell you about the compound?

The formula of a compound called methane is CH4. This formula shows, among many other things, that there are four times as many hydrogen atoms as carbon atoms in methane and that each molecule contains 5 total atoms.