Joninis ryšys

Question 1

What is the definition of a joninis ryšys?

Answer 1

A joninis ryšys, or ionic bond, is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions.

Question 2

True or False: Ionic bonds involve the sharing of electrons.

Answer 2

False

Question 3

Fill in the blank: Ionic bonds typically form between ______ and ______ elements.

Answer 3

metals, nonmetals

Question 4

What is the charge of a cation?

Answer 4

Positive

Question 5

What is the charge of an anion?

Answer 5

Negative

Question 6

Multiple Choice: Which of the following compounds contains an ionic bond? A) CH4 B) NaCl C) CO2

Answer 6

B) NaCl

Question 7

What is the typical structure of ionic compounds?

Answer 7

They form a crystalline lattice structure.

Question 8

True or False: Ionic compounds have high melting and boiling points.

Answer 8

True

Question 9

What happens to ionic compounds in water?

Answer 9

They typically dissolve and dissociate into ions.

Question 10

Fill in the blank: The strength of an ionic bond is primarily determined by the ______ of the ions involved.

Answer 10

charge

Question 11

What is the term for the energy required to separate one mole of an ionic compound into its gaseous ions?

Answer 11

Lattice energy

Question 12

Multiple Choice: Which of the following is NOT a property of ionic compounds? A) Conduct electricity in solid form B) Soluble in water C) Formed from metal and nonmetal

Answer 12

A) Conduct electricity in solid form

Question 13

What is the role of electronegativity in ionic bond formation?

Answer 13

Electronegativity difference between atoms leads to electron transfer, forming ions.

Question 14

True or False: Ionic bonds can form between two nonmetals.

Answer 14

False

Question 15

What type of reaction typically produces ionic compounds?

Answer 15

Neutralization reactions between acids and bases.

Question 16

Fill in the blank: In an ionic bond, one atom ______ electrons while the other ______ them.

Answer 16

loses, gains

Question 17

What is an example of a common ionic compound?

Answer 17

Sodium chloride (NaCl)

Question 18

Multiple Choice: Which of the following describes the formation of an ionic bond? A) Transfer of electrons B) Sharing of electrons C) None of the above

Answer 18

A) Transfer of electrons

Question 19

What is the effect of ionic bonding on the electrical conductivity of a compound in the molten state?

Answer 19

Ionic compounds conduct electricity when molten because the ions are free to move.

Question 20

True or False: Ionic bonds are weaker than covalent bonds.

Answer 20

False

Question 21

What is the term for the formation of an ionic bond?

Answer 21

Ionic bond formation

Question 22

Fill in the blank: Ionic bonds are typically formed between elements with a large difference in ______.

Answer 22

electronegativity

Question 23

What happens to ionic bonds when subjected to high temperatures?

Answer 23

They can break, leading to the melting of the ionic compound.

Question 24

Multiple Choice: Which process is involved in the formation of an ionic bond? A) Electron affinity B) Ionization energy C) Both A and B

Answer 24

C) Both A and B

Question 25

What is a key characteristic of ionic compounds in terms of solubility?

Answer 25

Many ionic compounds are soluble in polar solvents like water.

Question 26

True or False: Ionic bonds are directional.

Answer 26

False

Question 27

What is the typical physical state of ionic compounds at room temperature?

Answer 27

Solid