Unit 6 - Acids and Bases, Radioactivity, Half-Life

Front

What is an acid?

Back

An acid is a corrosive substance characterized by a sour taste and a pH less than 7.

Front

What is a base?

Back

A base is a substance that can accept hydrogen ions (H+) and has a pH greater than 7.

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What happens when an acid and a base react?

Back

When an acid and a base react, they neutralize each other, typically producing water and a salt.

Front

What is the definition of neutralization?

Back

Neutralization is the chemical reaction between an acid and a base that results in a neutral solution.

Front

What are the three types of nuclear radiation?

Back

The three types of nuclear radiation are alpha, beta, and gamma radiation.

Front

Which type of radiation has the highest penetrating power?

Back

Gamma radiation has the highest penetrating power.

Front

What is half-life?

Back

Half-life is the amount of time it takes for half the nuclei in a sample of a radioactive isotope to decay.

Front

How does the half-life of a substance affect its stability?

Back

A shorter half-life indicates that a substance is less stable and decays more quickly.

Front

What is an example of a common acid?

Back

Common examples of acids include vinegar (acetic acid) and lemon juice (citric acid).