Chemistry Final Review

Front

Why do atoms bond?

Back

To have a full valence shell.

Front

What is the number of hydrogen atoms in 3(NH₄)₂CrO₄?

Back

24

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

What is Avogadro's number?

Back

6.02 × 10^23 particles per mole.

Front

What is electronegativity?

Back

How good an atom is at attracting electrons.

Front

What is a mole in chemistry?

Back

A unit that measures the amount of substance, equal to 6.02 × 10^23 particles.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the pH scale?

Back

A scale that measures how acidic or basic a solution is, ranging from 0 (acidic) to 14 (basic).

Front

What is a chemical reaction?

Back

A process where reactants are transformed into products, involving the breaking and forming of bonds.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number and grouped by similar properties.