Question

Distinguish between symbols, chemical formulas and chemical equations

Answer 1

* Chemical Symbols and

Formulas and Equations

1) Chemical Symbol -

A chemical symbol is a one-or two-letter designation of an element. Some examples of chemical symbols are "O" for oxygen, "Zn" for zinc, and "Fe" for iron. The first letter of a symbol is always capitalized. If the symbol contains two letters, the second letter is lower case. The majority of elements have symbols that are based on their English names.

However, some of the elements that have been known since ancient times have maintained symbols that are based on their Latin names, as shown in Table below.

• Symbols and Names for Elements :

Chemical Symbol Name

Na sodium

K potassium

Fe iron

Cu copper

Ag silver

Sn tin

Sb antimony

Au gold

Pb lead

2) Chemical Formulas -

Compounds are combinations of two or more elements. A chemical formula is an expression that shows the elements in a compound and the relative proportions of those elements. Water is composed of hydrogen and oxygen in a two to one ratio. The chemical formula for water is H2O. Sulfuric acid is one of the most widely produced chemicals in the Unites States and is composed of the elements hydrogen, sulfur, and oxygen. The chemical formula for sulfuric acid is H2SO4. designation of an element. Some examples of chemical symbols are "O" for oxygen, "Zn" for zinc, and "Fe" for iron. The first letter of a symbol is always capitalized. If the symbol contains two letters, the second letter is lower case. The majority of elements have symbols that are based on their English names. However, some of the elements that have been known since ancient times have maintained symbols that are based on their Latin names, as shown in Table below.

3) Chemical Equations -

Chemical reactions convert reactants to products, whose properties differ from those of the reactants. Chemical equations are a compact and convenient way to represent chemical reactions. They have the general form

Reactant(s) → Product(s)

The arrow in the equation means "changes to" or "forms." The reaction of gaseous nitrogen with hydrogen to produce ammonia, NH3, is represented by the chemical equation

Although there are thousands of chemical reactions, a significant number of them, especially those that are not organic reactions, can be classified according to four general patterns: combination, decomposition, displacement, and exchange.

eg.

1. NaOH (aq ) + HCl (aq ) → NaCl (aq )

+ H2O ( l )

Answer 2

Answer:

BB u to r ki t

Explanation:

FM we y2 yr g it to hi r te we qe23 hi p yr DJ ka AC chanakyapuri g te we are not to the end of the end of the end of the end of the day of pandal hopping and dad and dad is not dhanteras and dad situ you are in Kolkata and it's