Chemical Naming And Formulas

Question 1

How do you name a compound formed from a metal and a non-metal?

Answer 1

Change the ending of the non-metal to ‘-ide’. Example: Copper Sulfide

The naming convention applies to binary ionic compounds.

Question 2

How do you name a compound which is made of three elements and one of them is oxygen?

Answer 2

Change the ending of the non-metal to ‘-ate’. Example: Copper Sulfate

This typically applies to compounds containing polyatomic ions.

Question 3

What is a chemical formula?

Answer 3

A representation of a compound showing the elements and their proportions.

Chemical formulas provide insight into the composition of substances.

Question 4

Name the elements in H2O.

Answer 4

Hydrogen, Oxygen

H2O is commonly known as water.

Question 5

Name the elements in H2SO4.

Answer 5

Hydrogen, Oxygen and Sulfur

H2SO4 is known as sulfuric acid.

Question 6

How many atoms of Mg, N and O are there in Mg(NO3)2?

Answer 6

Mg: 1, N: 2, O: 6

This reflects the composition of magnesium nitrate.

Question 7

What is the formula for sodium chloride?

Answer 7

NaCl

Sodium chloride is commonly known as table salt.

Question 8

What is the formula for magnesium oxide?

Answer 8

MgO

Magnesium oxide is an ionic compound formed from magnesium and oxygen.

Question 9

What is the formula for calcium carbonate?

Answer 9

CaCO3

Calcium carbonate is commonly found in rocks and is a major component of shells.

Question 10

Name these elements based on their symbols: He, O, Na, Cl, Mg.

Answer 10

He: Helium, O: Oxygen, Na: Sodium, Cl: Chlorine, Mg: Magnesium

These are chemical symbols for the respective elements.

Question 11

What are the 7 diatomic elements?

Answer 11

H2, N2, F2, O2, I2, Cl2, Br2

These elements exist as diatomic molecules in their natural state.

Question 12

Fill in the blank: The mnemonic for the 7 diatomic elements is _______.

Answer 12

Have No Fear Of Ice Cold Beer

This mnemonic helps to remember the diatomic elements.