reg Chemistry Flashcard

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons, resulting in different atomic masses.

Front

How do you calculate the number of neutrons in an isotope?

Back

Number of neutrons = Atomic mass - Number of protons.

Front

What does the atomic number indicate?

Back

The atomic number represents the number of protons in the nucleus of an atom.

Front

What is the formula mass of a compound?

Back

The formula mass is the sum of the atomic masses of all the atoms in a chemical formula.

Front

What is the significance of pH in chemistry?

Back

pH is a measure of the acidity or basicity of a solution, with lower values indicating acidity and higher values indicating basicity.

Front

What is the formula for Iron(II) oxide?

Back

FeO.

Front

What is the difference between an acid and a base?

Back

Acids donate protons (H+) in a solution, while bases accept protons.

Front

What is the pH range for acidic solutions?

Back

The pH range for acidic solutions is from 0 to 7.

Front

What is the pH range for basic solutions?

Back

The pH range for basic solutions is from 7 to 14.

Front

What is a neutral solution?

Back

A neutral solution has a pH of 7, indicating an equal concentration of H+ and OH- ions.