Ionic Compounds

Question 1

Rules for determining chemical formula of a monovalent compound.

Answer 1

Write the symbol for the metal and non-metal.
Write the “ionic charge” in the top right corner.
Criss-cross the charges and write them as subscripts for the other element.

Question 2

Define “Monovalent Ionic Compound”

Answer 2

A element that has only 1 possible charge.

Question 3

Define “Polyatomic Ionic Compound”

Answer 3

A polyatomic ion is a group of ions that act as a single action (e.g. sulphate - 1 silver atom; 4 oxygen atoms)

Question 4

What is the general rule for drawing ionic compounds?

Answer 4

Oppositely charged ions attract each other to form ionic compounds.

Question 5

True or False: In an ionic compound, the cation is drawn first followed by the anion.

Answer 5

True

Question 6

Fill in the blank: In an ionic compound, the cation is written with its ____________ before the anion.

Answer 6

oxidation number

Question 7

Which element is typically written first in an ionic compound formula?

Answer 7

Metal

Question 8

What is the charge on the cation in the ionic compound NaCl?

Answer 8

+1

Question 9

What is the charge of a sodium ion?

Answer 9

The charge of a sodium ion is +1.

Question 10

How do you determine the charge of an ion?

Answer 10

The charge of an ion is determined by the number of electrons it gains or loses.

Question 11

True or False: An ion with a positive charge has lost electrons.

Answer 11

True. An ion with a positive charge has lost electrons.

Question 12

Fill in the blank: A chloride ion has a charge of ____.

Answer 12

-1.

Question 13

What is the charge of a magnesium ion?

Answer 13

The charge of a magnesium ion is +2.

Question 14

What is the chemical formula for sodium chloride?

Answer 14

NaCl

Question 15

What is the name of the compound with the chemical formula KBr?

Answer 15

Potassium bromide

Question 16

Write the chemical formula for magnesium oxide.

Answer 16

MgO

Question 17

What is the formula for calcium nitrate?

Answer 17

Ca(NO3)2

Question 18

Name the compound with the formula Al2(SO4)3.

Answer 18

Aluminum sulfate

Question 19

Write the chemical formula for iron(III) phosphate.

Answer 19

FePO4

Question 20

What is the formula for lithium hydroxide?

Answer 20

LiOH

Question 21

Name the compound with the formula CuCl2.

Answer 21

Copper(II) chloride

Question 22

Write the chemical formula for lead(II) sulfide.

Answer 22

PbS

Question 23

What is the chemical formula for barium carbonate?

Answer 23

BaCO3

Question 24

Name the compound with the formula NH4Cl.

Answer 24

Ammonium chloride

Question 25

Write the chemical formula for aluminum hydroxide.

Answer 25

Al(OH)3

Question 26

What is the formula for potassium permanganate?

Answer 26

KMnO4

Question 27

Name the compound with the formula FeCl3.

Answer 27

Iron(III) chloride

Question 28

Write the chemical formula for calcium carbonate.

Answer 28

CaCO3

Question 29

What is the formula for ammonium sulfate?

Answer 29

(NH4)2SO4

Question 30

Name the compound with the formula ZnO.

Answer 30

Zinc oxide

Question 31

Write the chemical formula for silver nitrate.

Answer 31

AgNO3

Question 32

What is the chemical formula for potassium iodide?

Answer 32

KI

Question 33

Name the compound with the formula MgSO4.

Answer 33

Magnesium sulfate

Question 34

Write the chemical formula for sodium carbonate.

Answer 34

Na2CO3

Question 35

What is the formula for iron(II) oxide?

Answer 35

FeO

Question 36

Name the compound with the formula CaCl2.

Answer 36

Calcium chloride

Question 37

Write the chemical formula for potassium sulfate.

Answer 37

K2SO4

Question 38

What is the formula for aluminum nitrate?

Answer 38

Al(NO3)3

Question 39

What is a monovalent compound?

Answer 39

A compound that contains only one type of element.

Question 40

What is a multivalent compound?

Answer 40

A compound that contains more than one type of element.

Question 41

True or False: A monovalent compound can only contain one atom of each element.

Answer 41

True

Question 42

Fill in the blank: A ________ compound contains multiple types of elements.

Answer 42

multivalent

Question 43

Which type of compound can have different oxidation states for the same element within the compound?

Answer 43

Multivalent compound

Question 44

What is a physical reaction?

Answer 44

A physical reaction is a change in the physical state or appearance of a substance without changing its chemical composition.

Question 45

What is a chemical reaction?

Answer 45

A chemical reaction is a process that results in the formation of one or more new substances with different chemical properties.

Question 46

Is melting an example of a physical or chemical reaction?

Answer 46

Melting is an example of a physical reaction.

Question 47

Is rusting an example of a physical or chemical reaction?

Answer 47

Rusting is an example of a chemical reaction.

Question 48

Which type of reaction involves a change in the chemical composition of a substance?

Answer 48

Chemical reaction.

Question 49

Which type of reaction involves a change in the physical state or appearance of a substance?

Answer 49

Physical reaction.

Question 50

When a piece of paper burns, is it a physical or chemical reaction?

Answer 50

Chemical reaction.

Question 51

When ice melts, is it a physical or chemical reaction?

Answer 51

Physical reaction.

Question 52

What is a key difference between physical and chemical reactions?

Answer 52

Physical reactions do not change the chemical composition of a substance, while chemical reactions do.

Question 53

Which type of reaction involves the breaking and forming of chemical bonds?

Answer 53

Chemical reaction.