Periodic Table, Chemical Reaction, and Acid & Base Flashcard

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What are noble gases?

Back

Noble gases are a group of chemical elements that are odorless, colorless, and have low reactivity due to their full valence shell. Examples include Helium (He) and Neon (Ne).

Front

What is the pH scale?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What is the pH range of an acid?

Back

The pH range of an acid is typically from 0 to 6.

Front

What is a chemical family?

Back

A chemical family, or group, is a column in the periodic table that contains elements with similar properties.

Front

Which elements are considered alkali metals?

Back

Alkali metals are found in Group 1 of the periodic table and include Lithium (Li), Sodium (Na), and Potassium (K).

Front

What is a chemical reaction?

Back

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

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is the difference between an acid and a base?

Back

Acids donate protons (H+) in a solution, while bases accept protons. Acids have a pH less than 7, and bases have a pH greater than 7.

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).