Chemical Names and Formulas 2024

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product. Example: Cr + S8 → Cr2S3.

Front

What is a single replacement reaction?

Back

A single replacement reaction is a type of chemical reaction where one element replaces another in a compound. Example: lead + magnesium nitrate → lead (II) nitrate + magnesium.

Front

What is the correct formula for Magnesium hydroxide?

Back

The correct formula for Magnesium hydroxide is Mg(OH)2.

Front

What charge does a magnesium ion typically have?

Back

A magnesium ion typically has a charge of +2.

Front

When writing chemical formulas, which ion is written first?

Back

The positive ion (cation) is always written first.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products. Example: 2H2O → 2H2 + O2.

Front

What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where two compounds exchange ions to form two new compounds. Example: AB + CD → AD + CB.

Front

What is the significance of subscripts in chemical formulas?

Back

Subscripts indicate the number of atoms of each element in a compound. For example, in H2O, the '2' indicates there are two hydrogen atoms.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What is the formula for calculating the charge of an ion?

Back

The charge of an ion can be calculated based on the number of protons (positive) and electrons (negative) it has. Charge = Protons - Electrons.