Formation of ionic bond between Na and Cl and covalent bond in water is to be demonstrated. Concept introduction: An ionic bond is formed by electrostatic interaction between two oppositely charged ions. Ions are formed by transfer of one more electrons from one atom to another. The atom that looses electron gains positive charge is called as cation and the atom that gains electron gets negative charge is called as anion. Ionic bond is the electrostatic interaction between a cation and an anion. Covalent bonds are formed when two atoms share a pair of electrons to gain stability instead of transferring. Covalent bonds are generally formed between atoms with small or no difference in electronegativity.
Formation of ionic bond between Na and Cl and covalent bond in water is to be demonstrated. Concept introduction: An ionic bond is formed by electrostatic interaction between two oppositely charged ions. Ions are formed by transfer of one more electrons from one atom to another. The atom that looses electron gains positive charge is called as cation and the atom that gains electron gets negative charge is called as anion. Ionic bond is the electrostatic interaction between a cation and an anion. Covalent bonds are formed when two atoms share a pair of electrons to gain stability instead of transferring. Covalent bonds are generally formed between atoms with small or no difference in electronegativity.
Solution Summary: The author explains the formation of ionic bond between Na and Cl and covalent bond in water.
Definition Definition Number of protons in the nucleus of an atom. It uniquely identifies an element, as the number of protons determines the element's properties. The periodic table of elements is arranged based on increasing atomic numbers, allowing scientists to easily locate and study elements.
Chapter 4, Problem 155E
Interpretation Introduction
Interpretation:
Formation of ionic bond between Na and Cl and covalent bond in water is to be demonstrated.
Concept introduction:
An ionic bond is formed by electrostatic interaction between two oppositely charged ions. Ions are formed by transfer of one more electrons from one atom to another.
The atom that looses electron gains positive charge is called as cation and the atom that gains electron gets negative charge is called as anion. Ionic bond is the electrostatic interaction between a cation and an anion.
Covalent bonds are formed when two atoms share a pair of electrons to gain stability instead of transferring. Covalent bonds are generally formed between atoms with small or no difference in electronegativity.
1. When a candle is lit and allowed to burn for 15 minutes, some wax drips and collects at the base of the candle, and the candle becomes shorter.
a) Did you observe any physical changes? Explain.
b) Why did the candle become shorter? What happened to the missing sections of the candle?
c) Did you observe any evidence of chemical change? Explain
A favorite demonstration among chemistry instructors, to show that the properties of a compound differ from those of its constituent elements, involves iron filings and powdered sulfur. If the instructor takes samples of iron and sulfur and just mixes them together, the two elements can be separated from one another with a magnet (iron is attracted to a magnet, sulfur is not). If the instructor then combines and heats the mixture of iron and sulfur, a reaction takes place and the elements combine to form iron (II) sulfide (which is not attracted by a magnet).
Fe(s) + S(s) → FeS(s)
Suppose 6.73 g of iron filings is combined with 18.4 g of sulfur.
What is the theoretical yield of iron (II) sulfide?
If the reaction formed 7.35 g of iron (II) sulfide, what is the percent yield?
Molar Mass:Fe: 55.85 g/mol
S: 32.07 g/mol
Which of these is NOT true of chemical changes?
A) Chemical changes are state changes like a solid turning to aliquid or a liquid turning to a gas.
B) Chemical changes can produce heat.
C) A chemical change is a change in composition of a substance.
D) The rearrangement of chemical bonds is a characteristic of chemical changes.
E)Chemical changes result in new substances being formed.
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